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10 Cards in this Set
- Front
- Back
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What is an atom? |
Smallest whole part of all matter. |
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What is an element? |
Type of matter made of 1 type of atom. |
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What is a molecule? |
Type of matter made of 2 or more atoms chemically bonded together. |
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What is a compound? |
Type of matter made of 2 or more DIFFERENT types of atoms chemically bonded together. |
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What is a mixture? |
Material made of different elements and/or compounds. Can be separated using physical means. |
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What is a pure substance? |
Substance that CAN'T be broken down into simpler matter using physical methods: Elements. Compounds. |
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What is an impure substance? |
Substance that CAN be broken down into simpler matter using physical methods. |
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What is a physical change? |
Change in form of substance but not chemical composition. Chemical bonds AREN'T broken/formed. DOESN'T produce new substance. |
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What is a chemical change? |
Chemical bonds are broken/formed. New substances ARE produced. Chemical reaction has taken place. |
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What are the indications of a chemical change? |
Gas given off. Heat absorb or released. Light given off. Colour change. New substances produced. |
