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KS3 Chemistry learning resources for adults, children, parents and teachers organised by topic.

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Grade Gorilla | KS3 Chemistry Revision Questions

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KS3 Chemistry revision questions - easy access quizzes. If you are revising Key Stage 3 Science, these self-grading free quizzes are perfect!

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Atoms and the Periodic table knowledge organiser

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Atoms and the Periodic table knowledge organiser

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Atoms and the Periodic Table Knowledge Organiser

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KS3 Science revision materials and resource can be found on this page. You will also find the old Key Stage Three Science SAT papers and test papers.

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These free online CGP 10-Minute Tests are superb for KS3 Science (years 7 to 9) practice on the go! All the answers are explained at the end of each test.

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KS3 Science | Learning and Teaching for Year 7, Year 8 and Year 9

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Science is study of how the world goes around - from the smallest bug to the largest solar system. Our teachers write quizzes that make it a joy for you to learn KS3 Science in Years 7, 8 and 9.

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Complete KS3 Science

Year 7 & 8

Hello there, Pupils, Parents and Carers!

The Maths Society has prepared a series of science lessons for Year 7 & 8.

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Every lesson comes with short videos showing you clearly and simply how to complete the activity successfully.

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How to use the lessons

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Just follow these three easy steps...

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1. Click on the current term.

2. Check the topic set as homework. Watch the videos and make notes. Total time required is provided for watching the videos.

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3. Work through the exercises based on your Year 7 or 8.

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A regular daily learning routine will help to learn more effectively at home.

We therefore recommend that you aim to cover just one 50-60 minute session each day.

AQA Science Topics Covered

Year 7 & 8 - Biology

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KS3 Science | Video Tutorials and Resources

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Your #1 tool for mastering KS3 Science. Say goodbye to boring revision, we've rounded up model examplar answers, worksheets, videos and all kinds of resources to acheiving Grade 5 in Year 8 and moving onto GCSE science in Year 9.

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Key Stage Three CHEMISTRY QUIZZES

Doc Brown's revising KS3 SCIENCE - Doc Brown's Chemistry

(UK KS3 Science for 11-14 year olds roughly correspond to US high grades 6, grade 7 and grade 8 school chemistry science)

Sub-index for this page

Introduction to my KS3 chemistry multiple choice quizzes

Index of multiple choice quizzes for KS3 chemistry tests (10 random questions)

Index of multiple choice quizzes for KS3 chemistry exam practice (random questions, max 138-236 Qs)

Index of KS3 chemistry word-fill worksheets and crossword puzzles

Summary of the National Curriculum KS3 chemistry specification

The content of the AQA KS3 chemistry course specification
OCR knowledge and understanding expected from KS3 chemistry before doing GCSE Chemistry

Introduction to my KS3 Chemistry Quizzes

I appreciate SAT levels have gone, but I hope these KS3 chemistry Quizzes will still be of some use. Although I've already produced some combined KS3 chemistry quizzes, I welcome suggestions from teachers so I may produce useful compilation KS3 chemistry quizzes suitable for any school doing KS3 chemistry and any KS3 chemistry scheme of work now that the KS3 chemistry levels and KS3 chemistry SAT exams have gone. Copying of the KS3 chemistry quizzes is NOT permitted but you can printout the questions to use in class or for homework.
KS3 Chemistry and Earth Science Multiple Choice Questions The 10 KS3 Chemistry Questions are selected at RANDOM from big databases.
PLEASE NOTE: (1 ) <= back on the link bar returns you to the previous web page.

(2) Don't use the usual refresh button on the browser to repeat the quiz, use the REPEAT QUIZ - fresh Q's on the quiz link bar - note there is a small chance that the same KS3 chemistry question might be repeated.

(3) A small proportion questions are deliberately very challenging and more like GCSE level, but only the odd one! and most cover the full range of ability of KS3 science chemistry students.

This is a BIG website, you need to take time to explore it [ website search box]

Might be best to use your mobile phone or ipad etc. in 'landscape' orientation when doing the KS3 chemistry quizzes

If you have a query over a KS3 chemistry multiple choice question, please email quoting the database reference in square brackets e.g. [7E-xx] etc. and any useful comment is appreciated via email doc brown - comment - query?

READ THE FEEDBACK and if you get a KS3 chemistry question wrong, make a quick note on the topic it deals with and check it out with your school notebooks, work sheets and KS3 chemistry textbooks and return to the quiz later.

Index of Multiple choice question quizzes for KS3 CHEMISTRY

(other quizzes are listed further down the page)

The individual KS3 chemistry quizzes are being updated to fit in with the 2018+ National Curriculum and AQA, Edexcel and OCR pre-GCSE KS3 Science expectations-specifications

I've left the old work scheme references 7E-H, 8E-H and 9E-H for my own reference.

The scoring of the quiz is based on the % clicks you need to get to the correct answer for 10 Qs

1. QUIZ 7E9E Acids, alkalis, salts, pH, neutralisation, reactions of metal compounds

2. QUIZ 7F Important chemical concepts, definitions, types of reaction, reacting mass calculations

3. QUIZ 7G Particle models and properties of solids, liquids and gases

4. QUIZ 7H8F Elements, compounds, mixtures and methods of separating mixtures .

5. QUIZ 8E Elements and the Periodic Table

6. QUIZ 8G8H Weathering, erosion, types of rocks and the 'Rock Cycle'

7. QUIZ 9F Reactivity of metals and their extraction

8. QUIZ 9G9H Resources, useful products from chemistry, the environment

KS3 science-CHEMISTRY 7E Acids and alkalis
The same KS3 chemistry quizzes BUT no limit and no repeats of randomly chosen questions in ()

1. QUIZ 7E9E Acids, alkalis, salts, pH, neutralisation, reactions of metal compounds (229 Qs)

2. QUIZ 7F Important chemical concepts, definitions, types of reaction, reacting mass calculations (167 Qs)

KS3 science-CHEMISTRY 7F Simple chemical reactions
KS3 Chemistry TOPIC word-fill worksheets and crossword puzzles

matching pair quiz on pH and on hazard symbols

four handy linked word-fill worksheets * 7Fwf1-4 7Fwf2 * 7Fwf3 * 7Fwf4 *

KS3 science-CHEMISTRY 7G Particle model of solids, liquids and gases

3 linked matching pair exercises on the states of matter and * States2mp and States3mp

KS3 science-CHEMISTRY 7H Solutions (solubility, salt purification and chromatography etc.)

matching pair exercise on keywords

type in element symbol/name quiz
matching pair exercise on rock types
five handy linked word-fill worksheets * 8Fwf1-5 8Fwf2 * 8Fwf3 * 8Fwf4 * 8Fwf5 *

four handy linked word-fill worksheets * 8Hwf1-4 8Hwf2 * 8Hwf3 * 8Hwf4 *

five handy linked word-fill worksheets * 9Ewf1-5 9Ewf2 * 9Ewf3 * 9Ewf4 * 9Ewf5 *
SEE ALSO the KS3 Science Quiz compilations
six handy linked word-fill worksheets * 9Fwf1-6 9Fwf2 * 9Fwf3 * 9Fwf4 * 9Fwf5 * 9Fwf6 *

handy linked word-fill worksheets * 9Gwf1-3 9Gwf2 * 9Gwf3 *

20 Question multiple choice QUIZ on CHEMICAL and MATERIAL BEHAVIOUR

Website content © Dr Phil Brown 2000+. All copyrights reserved on revision notes, images, quizzes, worksheets etc. Copying of website material is NOT permitted. Exam revision summaries & references to science course specifications are unofficial.

20 Question multiple choice QUIZ on ENERGY, ELECTRICITY and FORCES

National Curriculum KS3 Science CHEMISTRY specification

Subject content - KS3 Chemistry Pupils should be taught about:

KS3 chemistry: The particulate nature of matter (National Curriculum KS3 science-chemistry)

the properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure,

changes of state in terms of the particle model.

NC KS3 chemistry: Pure and impure substances (National Curriculum KS3 science-chemistry)

the concept of a pure substance,

mixtures, including dissolving,

diffusion in terms of the particle model,

simple techniques for separating mixtures: filtration, evaporation, distillation and chromatography

the identification of pure substances.

a simple (Dalton) atomic model,

differences between atoms, elements and compounds,

chemical symbols and formulae for elements and compounds,

conservation of mass changes of state and chemical reactions.

chemical reactions as the rearrangement of atoms,

representing chemical reactions using formulae and using equations,

combustion, thermal decomposition, oxidation and displacement reactions,

defining acids and alkalis in terms of neutralisation reactions,

the pH scale for measuring acidity/alkalinity; and indicators,

reactions of acids with metals to produce a salt plus hydrogen,

reactions of acids with alkalis to produce a salt plus water,

what catalysts do.

energy changes on changes of state (qualitative),

exothermic and endothermic chemical reactions (qualitative).

the varying physical and chemical properties of different elements,

the principles underpinning the Mendeleev Periodic Table,

the Periodic Table: periods and groups; metals and non-metals,

how patterns in reactions can be predicted with reference to the Periodic Table,

the properties of metals and non-metals,

the chemical properties of metal and non-metal oxides with respect to acidity.

the order of metals and carbon in the reactivity series,

the use of carbon in obtaining metals from metal oxides,

properties of ceramics, polymers and composites (qualitative).

the composition of the Earth,

the structure of the Earth,

the rock cycle and the formation of igneous, sedimentary and metamorphic rocks,

Earth as a source of limited resources and the efficacy of recycling,

the carbon cycle,

the composition of the atmosphere,

the production of carbon dioxide by human activity and the impact on climate.

AQA KS3 Science Chemistry Course Specification
3.5.1 Particle model

Relate the features of the particle model to the properties of materials in different states

AQA KS3 chemistry Know

Properties of solids, liquids and gases can be described in terms of particles in motion but with differences in the arrangement and movement of these same particles: closely spaced and vibrating (solid), in random motion but in contact (liquid), or in random motion and widely spaced (gas).

Observations where substances change temperature or state can be described in terms of particles gaining or losing energy.

Fact A substance is a solid below its melting point, a liquid above it, and a gas above its boiling point.

Keywords

Particle: A very tiny object such as an atom or molecule, too small to be seen with a microscope.

Particle model: A way to think about how substances behave in terms of small, moving particles.

Diffusion: The process by which particles in liquids or gases spread out through random movement from a region where there are many particles to one where there are fewer.

Gas pressure: Caused by collisions of particles with the walls of a container.

Density: How much matter there is in a particular volume, or how close the particles are.

Evaporate: Change from liquid to gas at the surface of a liquid, at any temperature.

Boil: Change from liquid to a gas of all the liquid when the temperature reaches boiling point.

Condense: Change of state from gas to liquid when the temperature drops to the boiling point.

Melt: Change from solid to liquid when the temperature rises to the melting point.

Freeze: Change from liquid to a solid when the temperature drops to the melting point.

Sublime: Change from a solid directly into a gas.

AQA KS3 chemistry Apply

Explain unfamiliar observations about gas pressure in terms of particles.

Explain the properties of solids, liquids and gases based on the arrangement and movement of their particles.

Explain changes in states in terms of changes to the energy of particles.

Draw before and after diagrams of particles to explain observations about changes of state, gas pressure and diffusion.

AQA KS3 chemistry Extend

Argue for how to classify substances which behave unusually as solids, liquids or gases.

Evaluate observations that provide evidence for the existence of particles.

Make predictions about what will happen during unfamiliar physical processes, in terms of particles and their energy.

3.5.2 Separating mixtures Devise ways to separate mixtures, based on their properties

AQA KS3 chemistry Know

A pure substance consists of only one type of element or compound and has a fixed melting and boiling point.

Mixtures may be separated due to differences in their physical properties.

The method chosen to separate a mixture depends on which physical properties of the individual substances are different.

Skill Use techniques to separate mixtures.

Fact Air, fruit juice, sea water and milk are mixtures. Liquids have different boiling points.

Keywords

Solvent: A substance, normally a liquid, that dissolves another substance.

Solute: A substance that can dissolve in a liquid.

Dissolve: When a solute mixes completely with a solvent.

Solution: Mixture formed when a solvent dissolves a solute.

Soluble (insoluble): Property of a substance that will (will not) dissolve in a liquid.

Solubility: Maximum mass of solute that dissolves in a certain volume of solvent.

Pure substance: Single type of material with nothing mixed in.

Mixture: Two or more pure substances mixed together, whose properties are different to the individual substances.

Filtration: Separating substances using a filter to produce a filtrate (solution) and residue.

Distillation: Separating substances by boiling and condensing liquids.

Evaporation: A way to separate a solid dissolved in a liquid by the liquid turning into a gas.

Chromatography: Used to separate different coloured substances.

AQA KS3 chemistry Apply

Explain how substances dissolve using the particle model.

Use the solubility curve of a solute to explain observations about solutions.

Use evidence from chromatography to identify unknown substances in mixtures.

Choose the most suitable technique to separate out a mixture of substances

AQA KS3 chemistry Extend

Analyse and interpret solubility curves.

Suggest a combination of methods to separate a complex mixture and justify the choices.

Evaluate the evidence for identifying a unknown substance using separating techniques.

3.5.3 Periodic table Sort elements using chemical data and relate this to their position in the periodic table

AQA KS3 chemistry Know

The elements in a group all react in a similar way and sometimes show a pattern in reactivity.

As you go down a group and across a period the elements show patterns in physical properties.

Facts

Metals are generally found on the left side of the table, non-metals on the right.

Group 1 contains reactive metals called alkali metals.

Group 7 contains non-metals called halogens.

Group 0 contains unreactive gases called noble gases.

Keywords

Periodic table: Shows all the elements arranged in rows and columns.

Physical properties: Features of a substance that can be observed without changing the substance itself.

Chemical properties: Features of the way a substance reacts with other substances.

Groups: Columns of the periodic table.

Periods: Rows of the periodic table.

AQA KS3 chemistry Apply

Use data to describe a trend in physical properties.

Describe the reaction of an unfamiliar Group 1 or 7 element.

Use data showing a pattern in physical properties to estimate a missing value for an element.

Use observations of a pattern in chemical reactions to predict the behaviour of an element in a group.

AQA KS3 chemistry Extend

Predict the position of an element in the periodic table based on information about its physical and chemical properties.

Choose elements for different uses from their position in the periodic table.

Use data about the properties of elements to find similarities, patterns and anomalies.

3.5.4 Elements Compare the properties of elements with the properties of a compound formed from them

AQA KS3 chemistry Know

Most substances are not pure elements, but compounds or mixtures containing atoms of different elements.

They have different properties to the elements they contain.

Skills

Use particle diagrams to classify a substance as an element, mixture or compound and as molecules or atoms.

Name simple compounds using rules: change non-metal to -ide; mono, di, tri prefixes; and symbols of hydroxide, nitrate, sulfate and carbonate.

Fact The symbols of hydrogen, oxygen, nitrogen, carbon, hydrogen, iron, zinc, copper, sulfur, aluminium, iodine, bromine, chlorine, sodium, potassium and magnesium.

Keywords

Elements: What all substances are made up of, and which contain only one type of atom.

Atom: The smallest particle of an element that can exist.

Molecules: Two to thousands of atoms joined together.

Most non-metals exist either as small or giant molecules.

Compound: Pure substances made up of two or more elements strongly joined together.

Chemical formula: Shows the elements present in a compound and their relative proportions.

Polymer: A molecule made of thousands of smaller molecules in a repeating pattern.

Plastics are man-made polymers, starch is a natural polymer.

AQA KS3 chemistry Apply

Name compounds using their chemical formulae.

Given chemical formulae, name the elements present and their relative proportions.

Represent atoms, molecules and elements, mixtures and compounds using particle diagrams.

Use observations from chemical reactions to decide if an unknown substance is an element or a compound.

AQA KS3 chemistry Extend

3.6 Reactions

3.6.1 Metals and non-metals Use experimental results to suggest an order of reactivity of various metals

AQA KS3 chemistry Know

Metals and non-metals react with oxygen to form oxides which are either bases or acids.

Metals can be arranged as a reactivity series in order of how readily they react with other substances.

Some metals react with acids to produce salts and hydrogen.

Facts

Iron, nickel and cobalt are magnetic elements.

Mercury is a metal that is liquid at room temperature.

Bromine is a non-metal that is liquid at room temperature.

Keywords

Metals: Shiny, good conductors of electricity and heat, malleable and ductile, and usually solid at room temperature.

Non-metals: Dull, poor conductors of electricity and heat, brittle and usually solid or gaseous at room temperature.

Displacement: Reaction where a more reactive metal takes the place of a less reactive metal in a compound.

Oxidation: Reaction in which a substance combines with oxygen.

Reactivity: The tendency of a substance to undergo a chemical reaction.

AQA KS3 chemistry Apply

Describe an oxidation, displacement, or metal acid reaction with a word equation.

Use particle diagrams to represent oxidation, displacement and metal-acid reactions.

Identify an unknown element from its physical and chemical properties.

Place an unfamiliar metal into the reactivity series based on information about its reactions.

AQA KS3 chemistry Extend

Deduce the physical or chemical changes a metal has undergone from its appearance.

Justify the use of specific metals and non-metals for different applications, using data provided.

Deduce a rule from data about which reactions will occur or not, based on the reactivity series.

AQA KS3 chemistry 3.6.2 Acids and alkalis

AQA KS3 chemistry Devise an enquiry to compare how well indigestion remedies work

AQA KS3 chemistry Know

The pH of a solution depends on the strength of the acid: strong acids have lower pH values than weak acids.

Mixing an acid and alkali produces a chemical reaction, neutralisation, forming a chemical called a salt and water.

Facts

Acids have a pH below 7, neutral solutions have a pH of 7, alkalis have a pH above 7.

Acids and alkalis can be corrosive or irritant and require safe handling.

Hydrochloric, sulfuric and nitric acid are strong acids.

Acetic and citric acid are weak acids.

Keywords

pH: Scale of acidity and alkalinity from 0 to 14.

Indicators: Substances used to identify whether unknown solutions are acidic or alkaline.

Base: A substance that neutralises an acid - those that dissolve in water are called alkalis.

Concentration: A measure of the number of particles in a given volume.

AQA KS3 chemistry Apply

Identify the best indicator to distinguish between solutions of different pH, using data provided.

Use data and observations to determine the pH of a solution and explain what this shows.

Explain how neutralisation reactions are used in a range of situations.

Describe a method for how to make a neutral solution from an acid and alkali.

AQA KS3 chemistry Extend

Given the names of an acid and an alkali, work out the name of the salt produced when they react.

Deduce the hazards of different alkalis and acids using data about their concentration and pH.

Estimate the pH of an acid based on information from reactions.

AQA KS3 chemistry 3.6.3 Chemical energy

AQA KS3 chemistry Investigate a phenomenon that relies on an exothermic or endothermic reaction

AQA KS3 chemistry Know

During a chemical reaction bonds are broken (requiring energy) and new bonds formed (releasing energy).

If the energy released is greater than the energy required, the reaction is exothermic.

If the reverse, it is endothermic.

Keywords

Catalysts: Substances that speed up chemical reactions but are unchanged at the end.

Exothermic reaction: One in which energy is given out, usually as heat or light.

Endothermic reaction: One in which energy is taken in, usually as heat.

Chemical bond: Force that holds atoms together in molecules.

AQA KS3 chemistry Apply

Use experimental observations to distinguish exothermic and endothermic reactions.

Use a diagram of relative energy levels of particles to explain energy changes observed during a change of state.

AQA KS3 chemistry Extend

Predict whether a chemical reaction will be exothermic or endothermic given data on bond strengths.

Use energy data to select a reaction for a chemical hand warmer or cool pack.

AQA KS3 chemistry 3.6.4 Types of reaction

AQA KS3 chemistry Investigate changes in mass for chemical and physical processes

AQA KS3 chemistry Know

Combustion is a reaction with oxygen in which energy is transferred to the surroundings as heat and light.

Thermal decomposition is a reaction where a single reactant is broken down into simpler products by heating.

Chemical changes can be described by a model where atoms and molecules in reactants rearrange to make the products and the total number of atoms is conserved.

Skill Write word equations from information about chemical reactions.

Keywords

Fuel: Stores energy in a chemical store which it can release as heat.

Chemical reaction: A change in which a new substance is formed.

Physical change: One that changes the physical properties of a substance, but no new substance is formed.

Reactants: Substances that react together, shown before the arrow in an equation.

Products: Substances formed in a chemical reaction, shown after the reaction arrow in an equation.

Conserved: When the quantity of something does not change after a process takes place.

AQA KS3 chemistry Apply

Explain why a reaction is an example of combustion or thermal decomposition.

Predict the products of the combustion or thermal decomposition of a given reactant and show the reaction as a word equation.

Explain observations about mass in a chemical or physical change. Use particle diagrams to show what happens in a reaction.

AQA KS3 chemistry Extend

Compare the pros and cons of fuels in terms of their products of combustion.

Use known masses of reactants or products to calculate unknown masses of the remaining reactant or product.

Devise a general rule for how a set of compounds reacts with oxygen or thermally decomposes.

Balance a symbol equation.

Use mass of reactant in equation to determine mass of product eg magnesium and oxygen.

AQA KS3 chemistry 3.7 Earth

AQA KS3 chemistry 3.7.1 Earth structure
Model the processes that are responsible for rock formation and link these to the rock features
AQA KS3 chemistry Know

Sedimentary, igneous and metamorphic rocks can be inter converted over millions of years through weathering and erosion, heat and pressure, and melting and cooling.

Fact The three rock layers inside Earth are the crust, the mantle and the core.

Keywords

Rock cycle: Sequence of processes where rocks change from one type to another.

Weathering: The wearing down of rock by physical, chemical or biological processes.

Erosion: Movement of rock by water, ice or wind (transportation).

Minerals: Chemicals that rocks are made from.

Sedimentary rocks: Formed from layers of sediment, and which can contain fossils. Examples are limestone, chalk and sandstone.

Igneous rocks: Formed from cooled magma, with minerals arranged in crystals. Examples are granite, basalt and obsidian.

Metamorphic rocks: Formed from existing rocks exposed to heat and pressure over a long time. Examples are marble, slate and schist.

Strata: Layers of sedimentary rock.

AQA KS3 chemistry Apply

Explain why a rock has a particular property based on how it was formed.

Identify the causes of weathering and erosion and describe how they occur.

Construct a labelled diagram to identify the processes of the rock cycle.

AQA KS3 chemistry Extend

AQA KS3 chemistry Apply

AQA KS3 chemistry Extend

Predict patterns in day length, the Sun's intensity or an object's shadow at different latitudes.

Make deductions from observation data of planets, stars and galaxies.

Compare explanations from different periods in history about the motion of objects and structure of the Universe.

AQA KS3 chemistry 3.7.3 Climate
Investigate the contribution that natural and human chemical processes make to our carbon dioxide emissions
AQA KS3 chemistry Know

Carbon is recycled through natural processes in the atmosphere, ecosystems, oceans and the Earth's crust (such as photosynthesis and respiration) as well as human activities (burning fuels).

Greenhouse gases reduce the amount of energy lost from the Earth through radiation and therefore the temperature has been rising as the concentration of those gases has risen.

Scientists have evidence that global warming caused by human activity is causing changes in climate.

Facts

Methane and carbon dioxide are greenhouse gases.

Earth's atmosphere contains around 78 % nitrogen, 21 % oxygen, <1 % carbon dioxide, plus small amounts of other gases.

Keywords

Global warming: The gradual increase in surface temperature of the Earth.

Fossil fuels: Remains of dead organisms that are burned as fuels, releasing carbon dioxide.

Carbon sink: Areas of vegetation, the ocean or the soil, which absorb and store carbon.

Greenhouse effect: When energy from the sun is transferred to the thermal energy store of gases in Earth's atmosphere.

AQA KS3 chemistry Apply

Use a diagram to show how carbon is recycled in the environment and through living things.

Describe how human activities affect the carbon cycle.

Describe how global warming can impact on climate and local weather patterns.

AQA KS3 chemistry Extend

Evaluate the implications of a proposal to reduce carbon emissions.

Evaluate claims that human activity is causing global warming or climate change.

Compare the relative effects of human-produced and natural global warming.

AQA KS3 chemistry 3.7.4 Earth resources
Predict the method used for extracting metal based on its position in the reactivity series
AQA KS3 chemistry Know

There is only a certain quantity of any resource on Earth, so the faster it is extracted, the sooner it will run out. Recycling reduces the need to extract resources.

Most metals are found combined with other elements, as a compound, in ores.

The more reactive a metal, the more difficult it is to separate it from its compound.

Carbon displaces less reactive metals, while electrolysis is needed for more reactive metals.

Keywords

Natural resources: Materials from the Earth which act as raw materials for making a variety of products.

Mineral: Naturally occurring metal or metal compound.

Ore: Naturally occurring rock containing sufficient minerals for extraction.

Extraction: Separation of a metal from a metal compound.

Recycling: Processing a material so that it can be used again.

Electrolysis: Using electricity to split up a compound into its elements.

AQA KS3 chemistry Apply

AQA KS3 chemistry Extend

Suggest ways in which changes in behaviour and the use of alternative materials may limit the consumption of natural resources.

Suggest ways in which waste products from industrial processes could be reduced.

Use data to evaluate proposals for recycling materials.

OCR Twenty First Century Science knowledge and understanding expected from KS3 science-chemistry before a GCSE Chemistry course Chapter C1 Air and water
What you will learn about air and water from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you will learn:

Chapter C2: Chemical patterns

What you will learn about Chemical Patterns from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you will learn :

Chapter C3: Chemicals of the natural environment

What you will learn about chemicals of the natural environment from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you will learn

C4 Material choices

What you will learn about material choices from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you should:
Chapter C5 Chemical analysis
What you will learn about chemical analysis from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you should:

* use knowledge of solids, liquids and gases to decide how mixtures might be separated, including through filtering, sieving and evaporating

* understand the concept of a pure substance and how to identify a pure substance

* know about simple techniques for separating mixtures: filtration, evaporation, distillation and chromatography

* know about the pH scale for measuring acidity/ alkalinity; and indicators.

Chapter C6 Making useful chemicals
What you will learn about Making useful Chemicals from KS3 Chemistry before GCSE sciences

From study at Key Stages 1 to 3 you should:

KS3 science KS3 chemistry quiz summary of re-edit content of practice questions in the multiple choice quizzes

Doc Brown's KS3 Science-Chemistry Quiz Doc Brown's KS3 Science-Chemistry Quiz 7E Acids, alkalis, salts, neutralisation, pH scale and indicators questions for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses KS3 Science-Chemistry 9E on Reactions of metals and metal compounds with acids, methods of making salts from oxides and carbonates, word and symbol equations for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 9E Reactions of metals and metal compounds Questions on uses and the physical and chemical properties of metals, reaction of acids with metals, reaction of metal oxides and metal carbonates with acids, salt preparations by neutralisation, pH curves on mixing acids and alkalis, methods of making a salt pH indicators US grade 6 science US grade 7 science US grade 8 science Quiz 7E ACIDS and ALKALIS multiple choice questions AQA Edexcel OCR courses QUIZ 7E Acids and alkalis Questions on common acids, alkalis, salts, pH scale, indicator colours, neutralisation reaction, applications and uses of acids, alkalis and salts, hazard warning symbols

Doc Brown's KS3 Science-Chemistry Quiz 7F on Characteristics of physical and chemical changes, simple chemical reactions involving acids, carbonates, metals, combustion for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 7F Simple chemical reactions Questions on the idea of chemical reaction from reactants forming products, making new materials chemical reactions chemical changes physical changes evidence of chemical change iron sulfur reaction to make iron sulfide, combustion reactions, thermal decomposition reactions, comparing physical changes and chemical changes important definitions in KS3 chemistry important concepts in KS3 chemistry oxidation reduction displacement exothermic endothermic reactions US grade 6 science US grade 7 science US grade 8 science particle model explanation of chemical reactions law of conservation of mass calculations

Doc Brown's Science-Chemistry Quiz 7G PARTICLE MODELS - properties of gases, liquids, solids and explaining state changes for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 7G Particle model of solids, liquids and gases Questions on the explaining the properties of gases, liquids and solids using particle models and explaining state changes boiling melting condensation freezing, interpreting a heating graph and cooling curve graph energy changes, using the particle model to explain changes in pressure by increasing temperature, explaining changes in pressure when volume is decreased US grade 6 science US grade 7 science US grade 8 science using particle models to explain changes of state

Doc Brown's KS3 Science-Chemistry Quiz 7H on Particle pictures and methods of separating mixtures, distillation, filtration, chromatography for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 7H Mixtures Questions on particle models of mixtures, rock salt purification, purification, solute, solvent, solution, solubility, methods of separating mixtures, how to use simple apparatus used for filtration, evaporation, simple distillation, fractional distillation, paper chromatography separating colours, meaning of the terms solvent, solution and solute, relative solubility of salts and reading graphs of solubility curves and doing solubility calculations from graphs, knowing how to choose a method of separation in a given context US grade 6 science US grade 7 science US grade 8 science

Doc Brown's KS3 Science-Chemistry Quiz 8E Atoms, elements, compounds, reading and writing a formula, and simple reactions from elements to compounds for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 8E understanding what atoms, elements, compounds are, how to write simple formula, how to read a simple formula, simple reactions Questions on elements - different types of atoms making up materials, different types of elements, properties of metals, properties of non-metals, compounds and molecules, learning knowing names and symbols of elements in the periodic table, differences between metals and non-metals comparison of properties of metals and non-metals element symbols and names, group 1 alkali metals reactivity trend, group 7 halogens have similar properties US grade 6 science US grade 7 science US grade 8 science using trends to predict the properties of unknown elements in group 1 alkali metals, group 7 halogens, group 0 noble gases

KS3 Science-Chemistry Quiz questions 8G on SEDIMENTARY ROCKS, formation, fossils, physical weathering, chemical weathering, erosion for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses Doc Brown's KS3 Science-Chemistry Quiz questions 8H on THE ROCK CYCLE, the formation and properties of sedimentary, igneous and metamorphic rocks for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 8G Rocks and explaining weathering and erosion Questions on properties of rocks, chemical weathering and physical weathering, transport of sediment, formation of sedimentary rocks and the importance of fossils QUIZ 8H The Rock Cycle Questions on the formation of, and differences between, types of rock, comparing the properties of sedimentary, igneous and metamorphic rocks and how they are formed in the Rock Cycle, sandstone and limestone formation, slate, basalt, shale, marble, granite rock formation questions on the carbon cycle, plate tectonics, composition of Earth's atmosphere US grade 6 science US grade 7 science US grade 8 science

Doc Brown's KS3 Science-Chemistry Quiz 9F on PATTERNS of REACTIVITY in a series of metals, reactions with oxygen, water and acids, displacement reactions, equations for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 9F Patterns of reactivity Questions on reactions of metals with air (oxygen), water and acids, reactivity series of metals, metal displacement reactions, uses of the reactivity series in predicting the outcome of a reaction, observations of metal displacement reactions and uses of displacement reactions, reactivity series word equations, reactivity series symbol equations, uses and sources of metals, rusting and corrosion and uses of metals, metals in the periodic table, reactivity series of metals, extraction of metals, predicting the method of extracting a metal from its ore using the reactivity series of metals US grade 6 science US grade 7 science US grade 8 science

Doc Brown's KS3 Chemistry Quiz questions 9G ENVIRONMENTAL CHEMISTRY global warming, climate change, healthy soil, air pollution, water pollution KS3 science for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses Doc Brown's KS3 Chemistry Quiz questions 9H on USING CHEMISTRY, variety of applications, complete and incomplete combustion and fuels, simple battery, a match KS3 science for AQA, Edexcel and OCR pre-gcse courses KS3 science online KS3 chemistry practice revision questions for KS3 chemistry unit tests or summer exam papers up to higher level KS3 science chemistry for AQA KS3 science-chemistry courses and Edexcel and OCR KS3 science-chemistry courses QUIZ 9G Environmental chemistry Questions on types of soil, structure and composition of healthy soil, the formation and environmental effects of acid rain, monitoring pollution, the effects of global warming, climate change, greenhouse effect, sources of carbon dioxide, weathering and erosion QUIZ 9H Using chemistry, uses of chemical reactions, Questions on burning fuels as energy resources, measuring temperature changes in reactions from heat given out, chemistry of complete and incomplete combustion reactions and products, new materials are made by chemical reactions, useful chemicals like medicines, making a fuel cell, many different uses of chemicals use of recycling limited resources pollution US grade 6 science US grade 7 science US grade 8 science manufacture, properties and uses of ceramics, polymers and composites pollution

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KS3 CHEMISTRY Quizzes KS3 Science Quizzes Practice Revision Questions Y7 Y8 Y9 multiple choice KS3 chemistry exam practice exercises AQA OCR Edexcel worksheets crossword puzzles exercises KS3 chemistry science

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Key Stage Three CHEMISTRY QUIZZES Doc Brown's revising KS3 SCIENCE - Doc Brown's Chemistry (UK KS3 Science for 11-14 year olds roughly correspond to US high grades 6, grade 7 and grade 8 school chemistry science) Sub-index for this page Introduction to my KS3 chemistry multiple choice quizzes Index of

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Women in Science: 50 Fearless Pioneers Who Changed the World

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Does Anything Eat Wasps Summary

Does Anything Eat Wasps: And 101 Other Questions by New Scientist

Every year, readers send in thousands of questions to New Scientist, the world's best-selling science weekly, in the hope that the answers to them will be given in the 'Last Word' column - regularly voted the most popular section of the magazine.Does Anything Eat Wasps? is a collection of the best that have appeared, including: Why can't we eat green potatoes? Why do airliners suddenly plummet? Does a compass work in space? Why do all the local dogs howl at emergency sirens? How can a tree grow out of a chimney stack? Why do bruises go through a range of colours? Why is the sea blue inside caves? Many seemingly simple questions are actually very complex to answer. And some that seem difficult have a very simple explanation. New Scientist's 'Last Word' celebrates all questions - the trivial, the idiosyncratic, the baffling and the strange. This selection of the best is popular science at its most entertaining and enlightening.

About New Scientist

Since the first magazine was published in 1956, New Scientist has established a world-beating reputation for exploring and uncovering the latest developments and discoveries in science and technology, placing them in context and exploring what they mean for the future. Each week through a variety of different channels, including print, online, social media and more, New Scientist reaches over four million highly engaged readers - over a million readers for the print magazine alone.

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Does Anything Eat Wasps: And 101 Other Questions by New Scientist

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Customer Reviews - Does Anything Eat Wasps

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Buy Does Anything Eat Wasps: And 101 Other Questions By New Scientist. Available in used condition with free delivery in the UK. ISBN: 9781473651333. ISBN-10: 1473651336