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vocabulary matter

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