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| Study of composition, structure, and properties of matter along with the energy that accompanies these changes. |
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| Something with a definite mass and volume that is usually dense and resists compression with a low entropy. |
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| Something with a definite volume but no definite shape and also has more entropy and resists compression. |
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| Something with no definite shape or volume, is compressible with a high entropy and a low density with lots of kinetic energy. |
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| Substance is not altered but may change form. |
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| Substance is changed into something else. |
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| Properties of an element or compound that can be observed without changing the substance. |
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| Consists of two or more substances put together physically. |
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| The same thing throughout. Ex: Salt water |
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| Contains regions that have different properties than those in other regions. Ex: Sand in water |
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| Always has the same composition. |
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| A substance that can not be decomposed into simpler substances by chemic or physical means. All atoms have the same atomic number. |
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| A substance with constant composition that can be broken down into elements by chemical processes. |
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| How much space it takes up. |
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| Ability of a substance to change to a different substance. |
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