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| The study of matter- its structure, properties, and how it changes |
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| Any material substance with Mass and Volume |
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Solid: Definite shape
Liquid: Indefinite shape (takes the shape of the container)
Gas: Indefinite shape and volume (takes the shape of the container and can be expanded/ compressed) |
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The smallest type of matter is the atom
Atoms come in many varieties |
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pure substance made of only one kind of atom
EX: N (Nitrogen) |
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Substance that is made up of different atoms bonded together
Compounds have different properties than individual elements EX: H2O |
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| Law of Conservation of Mass |
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| Atoms are not created or destroyed during a chemical reaction |
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| Hold atoms together in a compound |
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can be observed using senses
Ex: smell, volume, color, shape |
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cannot be observed using senses- must be tested or reacted with something
Ex: ability to burn, rust, reaction with other substances |
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Do not change the identity of the matter on a chemical level
Nothing new or different is formed
Change in: shape, state, color, size |
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A chemical reaction must take place
Matter changes at the atomic level (atoms seperate and recombine in different ways)
New substances are created
Ex: rusting, burning, cooking |
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