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vocabulary matter

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Across
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a thing that is composed of two or more separate elements; a mixture.
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the degree of compactness of a substance.
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defined as substances that are made of only one type of atom
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the basic unit of a chemical element.
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occur when a substance combines with another to form a new substance
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the temperature at which a liquid boils and turns to vapor.
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the temperature at which a given solid will melt.
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a substance or material.
Down
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a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
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used to separate mixtures into their component compounds
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species of atoms having the same number of protons in their atomic nuclei.
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is regulated by the physical properties of the sample.
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a substance made by mixing other substances together.