A solution is a _________ in which one substance dissolves in another.

Because the substances in a mixture retain their original properties, they can be separated by __ means.

Pure substances made from only one type of atom are ________.

Iron, aluminum, copper, carbon, hydrogen, and oxygen are ___.

Salt, water, carbon dioxide, and sugar are ________.

Protons and neutrons make up the _________ of an atom.

Chlorine is a poisonous gas. When Chlorine chemically combines with Sodium, the result is the compound Sodium Chloride (NaCl). What might you do with NaCl?

When two or more elements combine to form a new substance, it's called a ______.

Which is correct?

Where do you find the electrons?

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