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| The basic building block of all matter that is the smallest unit of an element that still has the chemical properties of that element. |
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| Smallest unit of a compound; form when atoms join |
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| Also called phases of matter; solid, liquid, gas, and plasma |
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| Have a fixed shape and a fixed volume. |
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Definition
| Have no fixed shape, they take the shape of their container, but they do have a fixed volume. |
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| No fixed shape or volume, gases take the shape of their container and completely fill it. |
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| A characteristic of a substance that can be observed directly or measured with a tool without changing the composition of the substance. Examples include: volume, mass, weight, density, texture, and color |
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| Any change in a substance in which the composition of the substance does not change. Examples include: stretching a rubber band, smashing a pumpkin, melting ice, and slicing a carrot. |
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Definition
| a kind of matter that cannot be separated into other kinds of matter by any physical or chemical process |
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Definition
| A pure substance composed of more than one type of element chemically combined in a fixed proportion |
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