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Heterogeneous and Homogeneous Mixtures in Chemistry

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Homogeneous and Heterogeneous Mixture | Chemistry

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Free Flashcards about Properties of Matter

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Study free flashcards about Properties of Matter created by krmclendon to improve your grades. Matching game, word search puzzle, and hangman also available.

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Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

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Alloys Needed, Apply Here - Thermal Energy

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Alloys Needed, Apply Here - Thermal Energy

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Thermal Properties of Materials (Part 2) | Tuva

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This dataset gives thermal properties of several different metals. Properties include conductivity, density, and specific heat.

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Khan Academy: Physical and Chemical Changes

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Khan Academy: Physical and Chemical Changes

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Physical and chemical changes (practice) | Khan Academy

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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

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If you ever thought the periodic table was a boring collection of elements that has nothing to do with your life, this app will show you otherwise. "NOVA Elements" lets you explore an interactive periodic table, build the elements, play a game hosted by technology columnist David Pogue, and watch the two-hour NOVA program, "Hunting the Elements." Find out why the periodic table is shaped the way it is, what gives each element its own unique set of properties, and even how elements combine to make everyday objects such as a cup of coffee.

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Explore an interactive periodic table, combine elements to make real stuff, and watch the two-hour NOVA program "Hunting the Elements."

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Solubility Curves - Overview ( Video ) | Chemistry

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Solubility Curves | Properties of Matter | Chemistry | FuseSchool

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ExploreLearning : Get hands-on, minds-on in math and science

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Molecule Builder Gizmo : Lesson Info : ExploreLearning

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Create molecules using building blocks of carbon, hydrogen, oxygen, nitrogen, and other elements. Connect atoms by bonds, then create double or triple bonds if desired. For each completed molecule, write the chemical formula and, if the molecule is included in the database, observe the 3D structure.

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Ionic Bonds Gizmo : Lesson Info : ExploreLearning

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Simulate ionic bonds between a variety of metals and nonmetals. Select a metal and a nonmetal atom, and transfer electrons from one to the other. Observe the effect of gaining and losing electrons on charge, and rearrange the atoms to represent the molecular structure.

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ExploreLearning : Get hands-on, minds-on in math and science

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Covalent Bonds Gizmo : Lesson Info : ExploreLearning

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Choose a substance, and then move electrons between atoms to form covalent bonds and build molecules. Observe the orbits of shared electrons in single, double, and triple covalent bonds. Compare the completed molecules to the corresponding Lewis diagrams.

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ExploreLearning : Get hands-on, minds-on in math and science

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Solubility and Temperature Gizmo : Lesson Info : ExploreLearning

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Add varying amounts of a chemical to a beaker of water to create a solution, observe that the chemical dissolves in the water at first, and then measure the concentration of the solution at the saturation point. Either potassium nitrate or sodium chloride can be added to the water, and the temperature of the water can be adjusted.

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ExploreLearning : Get hands-on, minds-on in math and science

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Chemical Equations Gizmo : Lesson Info : ExploreLearning

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Practice balancing chemical equations by changing the coefficients of reactants and products. As the equation is manipulated, the amount of each element is shown as individual atoms, histograms, or numerically. Molar masses of reactants and products can also be calculated and balanced to demonstrate conservation of mass.

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Mystery Powder Analysis Gizmo : ExploreLearning

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Perform multiple experiments using several common powders such as corn starch, baking powder, baking soda, salt, and gelatin. The results of the research on the known powders can then be used to analyze several unknowns using the scientific method. The unknowns can be a single powder or a combination of the known powders.

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Chemical and Physical Changes STEM Case : Lesson Info : ExploreLearning

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The Secret Service recently arrested suspects accused of counterfeiting coins from 1915 valued at $50,000 each. The students act as a forensic scientist to investigate the crime scene and the evidence. Students learn about chemical and physical changes to recreate the methods used to make the coins as evidence for the trial.

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The law of conservation of mass - Todd Ramsey

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What is the shape of a molecule? - George Zaidan and Charles Morton

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The Science of Macaroni Salad: What's in a Molecule

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The Science of Macaroni Salad: What's in a Molecule

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The science of macaroni salad: What's in a molecule? - Josh Kurz

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The strengths and weaknesses of acids and bases - George Zaidan and Charles Morton

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Science teachers: meet your new solution to middle school assessment success with BrainPOP Science. Includes scaffolded investigations, embedded interactive tools, and actionable diagnostics.

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Physical and Chemical Changes Activities

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Physical and Chemical Changes Activities

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Login will be required December 31, 2021 to access all the CPALMS original student tutorials. Florida public school students will continue to have access to this and all other tutorials at www.floridastudents.org or their CPALMS Class Sites. Florida public school teachers will continue to be able to access them here and on www.floridastudents.org For all other teachers, parents, and students, you can access them with a subscription on www.cpalms.com

General Information

Keywords: science, Physical science, Grade 8, chemical changes, physical changes, reactions, gas, burning, bubbles, rusting, interactive, tutorials, elearning, e-learning

Aligned Standards

This vetted resource aligns to concepts or skills in these benchmarks.

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Learn to distinguish a physical change from a chemical change in this interactive tutorial.. science, Physical science, Grade 8, chemical chang

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Solubility Curves | Properties of Matter | Chemistry | FuseSchool

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By closing this popup and using MolView, you agree to the Terms of Use.

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Wordwall - Create better lessons quicker

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Match up - Drag and drop each keyword next to its definition.

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Wordwall - Create better lessons quicker

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NaCl - 1 Sodium and 1 Chlorine, H2O - 2 Hydrogen and 1 Oxygen, C6H12O6 - 6 Carbon, 12 Hydrogen, 6 Oxygen, H2SO4 - 2 Hydrogen, 1 Sulfur, 4 Oxygen, H2O2 - 2 Hydrogen 2 Oxygen, CO2 - 1 Carbon 2 Oxygen, CaCO3 - 1 Calcium, 1 Carbon, 3 Oxygen, H3PO4 - 3 Hydrogen, 1 Phosphorus, 4 Oxygen, NO2 - 1 Nitrogen, 2 Oxygen, P2O5 - 2 Phosphorus, 5 Oxygen,

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NaCl - 1 Sodium and 1 Chlorine, H2O - 2 Hydrogen and 1 Oxygen, C6H12O6 - 6 Carbon, 12 Hydrogen, 6 Oxygen, H2SO4 - 2 Hydrogen, 1 Sulfur, 4 Oxygen.

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Wordwall - Create better lessons quicker

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1) How many atoms of oxygen atoms are in this formula? a) 4 b) 3 c) 12 d) 2 2) How many atoms of sulfur atoms are in this formula? a) 4 b) 3 c) 12 d) 2 3) What is the total amount of Na atoms found here? a) 12 b) 2 c) 24 d) 1 4) What is the coefficient in this formula? a) 6 b) 14 c) 2 5) How many different elements are in this formula? a) 30 b) 3 c) 24 6) How many atoms of Oxygen are in the formula? a) 12 b) 6 c) 24 7) How many sulfur atoms are in this compound? a) 1 b) 2 c) 3 d) 4 8) How many atoms of Krypton (Kr)? a) 2 b) 1 c) 12 d) 14 9) How many atoms of Cl? a) 12 b) 1 c) 2 d) 14

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1) How many atoms of oxygen atoms are in this formula? 2) How many atoms of sulfur atoms are in this formula?

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Using the Concept Builder

The Formulas and Atom Counting Concept Builder is shown in the iFrame below. There is a small hot spot in the top-left corner. Clicking/tapping the hot spot opens the Concept Builder in full-screen mode. Use the Escape key on a keyboard (or comparable method) to exit from full-screen mode.

There is a second hot-spot in the lower-right corner of the iFrame. Dragging this hot-spot allows you to change the size of iFrame to whatever dimensions you prefer.

Using the Concept Builder

This Concept Builder will open in a separate browser window on your device. Click the Launch Tool button to open the Concept Builder. Close the window to return to this page.

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Formulas and Atom Counting Concept Builder

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The Formulas and Atom Counting Concept Builder is an interactive exercise that presents learners with the challenge of counting the number of atoms of each element present in a formula or complex set of formulas. There are three difficulty levels and an effort to track learner progress at each level…

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Let's start with molecules. Molecule is the general term used to describe any atoms that are connected by chemical bonds. Every combination of atoms is a molecule. A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H ₂) is a molecule, but not a compound because it is made of only one element. Water (H ₂ O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.

There are two main types of chemical bonds that hold atoms together: covalent and ionic/electrovalent bonds. Atoms that share electrons in a chemical bond have covalent bonds. An oxygen molecule (O ₂) is a good example of a molecule with a covalent bond. Ionic bonds occur when electrons are donated from one atom to another. Table salt (NaCl) is a common example of a compound with an ionic bond.

You may also learn about a third type of bond. Metallic bonds occur between metal atoms. We're going to focus on ionic and covalent bonds.

When we discuss phase changes in matter, we are looking at physical changes. Physical forces alone (unless you're inside of the Sun or something extreme) rarely break down compounds completely. You can apply heat to melt an ice cube, but there will be no change in the water molecules. You can also place a cup of water in a container and decrease the pressure. The water will eventually boil, but the molecules will not change.

Chemical changes in compounds happen when chemical bonds are created or destroyed. Forces act on the bonds between atoms, changing the molecular structure of a substance. You can pour liquid acid on a solid and watch the solid dissolve. That process is a chemical change because molecular bonds are being created and destroyed. Geologists pour acids on rocks to test for certain compounds.

There are millions of different compounds around you. Probably everything you can see is one type of compound or another. When elements join and become compounds, they lose many of their individual traits. Sodium (Na) alone is very reactive. But when sodium and chlorine (Cl) combine, they form a non-reactive substance called sodium chloride (table salt, NaCl). New compounds have few or none of the physical or chemical traits of the original elements. They have a new life of their own.

If you look at sodium chloride, it is held together by one ionic/electrovalent bond. What about magnesium chloride (MgCl ₂)? It contains one magnesium (Mg) and two chlorine (Cl) atoms. There are two ionic bonds. Methane (CH ₄) is made up of one carbon (C) and four hydrogen (H) atoms. There are four bonds and they are all covalent.

Those examples have very simple chemical bonds. However, most compounds have combinations of ionic and covalent bonds. Let's look at sodium hydroxide (Na-OH)...

You can see the sodium (Na) part on the left and the hydroxide (-OH) part on the right. The bond that binds the hydrogen (H) to the oxygen (O) is covalent. The sodium is bonded to the hydroxide part of the compound with an ionic bond. This is a good example of how there can be different types of bonds within one compound.

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Chem4Kids.com! This tutorial introduces chemical compounds. Other sections include matter, elements, the periodic table, reactions, and biochemistry.

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Designing Spacecraft for Re-entry Thermal Energy

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Designing Spacecraft for Re-entry Thermal Energy

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Thermal Properties of Materials (Part 1) | Tuva

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This dataset includes information about the thermal properties of various materials. Information given includes the **density** of each material, how easily the material conducts heat (**thermal conductivity**), how much heat is needed to warm t...

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Chemical Changes: Crash Course Kids #19.2

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Dogs Teaching Chemistry - Chemical Bonds

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How atoms bond - George Zaidan and Charles Morton