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Combustion by Ethan Kelly

Combustion is a simple process of burning something. Anytime we burn something combustion happens.it gives off heat and light. you need a combination of a substance that gives off heat.

The reactants of combustion are usually oxygen and the products are usually another element.

You can usually hear, feel, smell and see burning and you can see, smell smoke.

Combustion of the word and chemical equation of combustion.

The reaction is exothermic. It is exothermic because the reaction has something to do with burning.

You see combustion reaction in nature by seeing burning fire. See pictures below.

People, animals and plants could die with combustion because if we burn down trees we kill the oxygen in the body.  That is how we affect other people's lives.

References

Combustion in nature/ image search 2017, Online photographs to download, Dreamtime, accessed 28 March 2017, <https://www.dreamstime.com/search.php?securitycheck=eaeebe82686782077e9686a64e17d5f8&srh_field=combustion+in+nature&s_ph=y&s_il=y&s_video=n>.

Vannoy, M 2017, Combustion lessons for kids, Study.com, accessed 27 March 2017, <http://study.com/academy/lesson/combustion-lesson-for-kids.html

What are the typical reactants and products of combustion? 2017, Google Search, accessed 28 March 2017, <https://www.google.com.au/search?q=What%20are%20the%20reactants%20and%20products%20of%20a%20combustion%20reaction%3F>.

http://chemistry.elmhurst.edu/vchembook/511natgascombust.html

corrosion by Nicholas livanos

Corrosion or when something is corroded is when a metal rusts or when iron(Fe) is combined with oxygen (O2) or Sulfur (S),or with water (H2O) .iron oxide also know as rust is formed on the surface of all metals. All metals corrode some like pure iron corrode quicker , stainless steel on the other hand since it is a combination of iron and other alloys  it corrodes slower.but there is a small group of metals known as Nobel metals which are the only metals you can find in nature in their most pure form which rarely corrode .there a four types of corrosion ,General attack corrosion,localised corrosion ,Galvanic corrosion and environmental cracking.

If something gives out electrons --------@:&:&:&:&:&:&:&

Reactants and products

The reactants for corrosion are when any metal is exposed to water (H2O) , oxygen(O2) and Sulfur (S). The product this chemical reaction is rust also know as hydrated iron oxide (Fe(OH)3)and iron oxide (Fe2O3)

Iron+oxygen→  iron oxide

4 Fe + 3 O2 + 6 H2O → 4 Fe3+ 12 OH→  4 Fe(OH)3 or 4 FeO(OH) + 4 H2O

if you observes corroding you would see the surface of the iron changing colour

into to a brown flaky substance that covers the metal. It feels a lot bumpier  and a new substance is created on top metal called rust or iron oxide (Fe2O3)

Rusting i an exothermic reaction which means heat is produced when something corrodes .

Rust happens in nature if it has the reactants required like water and oxygen. And if their is a metal then corrosion will occur

Rust affects people lives because it turn things created by metals and makes them rust and makes them weaker for example if a metal bridge starts to rust it make the bridge weaker. By removing the strong iron or steel with flaky powder.corrosion is very costly

http://www.lenntech.com/periodic/water/iron/iron-and-water.htm#ixzz4cZUWYc7x

https://www.thebalance.com/what-is-corrosion-2339700

PhotoSynthesis: Nathan No-ot

Photosynthesis is the process in which plants take in light energy to create glucose to feed itself and release oxygen in the process. Plants convert carbon dioxide and water into oxygen and glucose. In this process, plants use cells called ‘Chloroplasts’ in their leaves to absorb the light from the sun. Inside the Chloroplasts, there are green molecules called ‘Chlorophyll’. These green molecules give leaves their colour and grant the Chloroplast the ability to absorb the light energy from the sun. With the light energy harnessed from the sun, plants use this to separate water molecules to hydrogen and oxygen atoms. The hydrogen is used with the carbon to form glucose and the oxygen is released to the air.

The reactants and products in the process of photosynthesis are carbon dioxide and water as the reactants. While the products are glucose and oxygen. Carbon Dioxide and water react with the light energy to form into oxygen and food for the plant, glucose.

The worded equation for photosynthesis is

‘ Carbon Dioxide + Water →With Light Energy  Glucose + Oxygen‘

The Chemical Equation for Photosynthesis is

‘6CO2 + 6H2O →  C6H12O6 + 6O2’

If there was no such thing as photosynthesis then there may not be plants at all. The world would be a barren wasteland and complex life may not even exist. People would not see the same Earth as we would and, or plants would evolve another way to create food for themselves. Another piece of evidence that dictates the fact that photosynthesis is real, is how we can see that almost everything on Earth is still alive. Mainly because of the oxygen which photosynthesis forms. The growth of plants is also evidence that photosynthesis exists.

This reaction is an endothermic reaction because it absorbs the light energy from the sun to turn carbon dioxide and water into glucose and oxygen. Other reasons are that this reaction does not release any heat which is a main factor in exothermic reactions.

Photosynthesis occurs almost everywhere in nature, from trees to plants, algae and to tiny microscopic organisms that live in the sea called phytoplankton.

Anything on earth that relies on oxygen to live is affected by the process of photosynthesis. The process of Photosynthesis produces almost all of the oxygen on earth.

Reference list:

(2006) Available at: http://www.classzone.com/vpg_ebooks/ml_sci_gr8/accessibility/ml_sci_gr8/page_292.pdf (Accessed: 27 March 2017).

Why is photosynthesis an endothermic reaction? (2016) Available at: https://socratic.org/questions/why-is-photosynthesis-an-endothermic-reaction (Accessed: 27 March 2017).

the, T.R. of (2015) UCSB science line. Available at: http://scienceline.ucsb.edu/getkey.php?key=297 (Accessed: 27 March 2017).

EarthSky (2015) How much do oceans add to world’s oxygen? Available at: http://earthsky.org/earth/how-much-do-oceans-add-to-worlds-oxygen (Accessed: 27 March 2017).

http://www.rsc.org/Education/Teachers/Resources/cfb/Photosynthesis.htm

http://photosynthesiseducation.com/photosynthesis-for-kids/

http://www.biology4kids.com/files/cell_chloroplast.html

Gabrielle Cantlon: Acid-base

A general description

Acid and bases are two kinds of chemicals. Almost all liquids are a type of acid or base in some way or another. To know whether a liquid is an acid or a base it would all depend on what type of iron is in it. For example if it has lots of hydrogen in it, it would be an acid. And if it has lots of hydroxide ions, it would be a base.

What are typical reactants and products?

The typical reactants for acid-base is water and salt. And the products are the combination of hydrochloric acid and sodium hydroxide

An example of a worded and chemical equation

One formula of acid + base → water + salt. Or HCI + KOH --> H2O + KCI

HCI - the strong acid

KOH - the strong base

H2O - water

KCI - salt

Another typical reaction is, acid + base → hydrochloric acid + sodium hydroxide. Or HCI + KOH --> HCI + NaOH.

HCI - the strong acid

KOH - the strong base

HCI - hydrochloric acid

NaOH - sodium hydroxide

What evidence would you see/hear/smell/feel if you observed

When you mix hydrochloric acid and sodium hydroxide  it becomes water. If you add the same colour for food colouring to hydrochloric acid, sodium hydroxide and water you can mix the hydrochloric acid to the sodium hydroxide and they will become the same colour as the water. Because HCI is a strong acid and NaOH is a strong base when they're mixed together it will produce heat and depending on their strength it may produce smoke. There is nothing to hear and no smell. The red beaker on the left is hydrochloric acid, the teal beaker on the far right is sodium hydroxide, the one in the middle front is water and the middle back is hydrochloric acid and sodium hydroxide mixed.

https://youtu.be/Iiu5mcAA8pU

The reaction between hydrochloric acid and sodium hydroxide is exothermic. It is exothermic because HCI and NaOH both try to balance each other out. And because these reactions give out energy.

You can reduce pain from a wasp sting by using an acid reaction with vinegar. Acid-base reactions can be used in medicine.

People's lives are affected by acid-base because we use it daily. Without acids we wouldn't have Vitamin C and car batteries. Without bases we wouldn't have certain products such as cleaning products and bleach.

Bibliography

https://chem.libretexts.org/Core/Physical_and_Theoretical_Chemistry/

http://www.chem4kids.com/files/react_acidbase.html

http://www.factmonster.com/cig/chemistry/what-acids-bases.html

http://www.sussexvt.k12.de.us/science/chemical%20reactions/acid-base%20reaction.htm

https://www.britannica.com/science/acid-base-reaction

https://youtu.be/Iiu5mcAA8pU                                        YouTube video

http://www.thestudentroom.co.uk/showthread.php?t=2224264

https://chem.libretexts.org/Core/Physical_and_Theoretical_Chemistry/Acids_and_Bases/Acid

http://berryberryeasy.com/2011/07/spm-chemistry-form-4-notes-acids-and-bases-part-2/

https://en.m.wikipedia.org/wiki/Acid–base_reaction

http://www.krysstal.com/acidbase.html