Science

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1.
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A measure of how much space an object takes up.
2.
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A pure substance that cannot be broken down into any simpler substances.
3.
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A particle in at he nucleus of an atom that carries one unit of positive electric charge.
4.
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A measure of the amount of matter in an object.
5.
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The force of gravity between Earth and an object.
6.
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Anything that has mass and takes up space.
7.
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A particle in the space outside the nucleus of an atom that carries one unit of negative electric charge.
8.
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To prevent heat from passing through.
9.
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The smallest unit of an element that retains the properties of that element.
10.
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A measure of how tightly packed the matter in an object is.
11.
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The passing of heat through a material while the material itself stays in place.
12.
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A dense structure inside the cell.