______ is composed of ____.
A _____ is a unit of matter composed of one or more _____.
An _____ is a _______ composed of same kind of _____.
A _______ is a ________ composed of two or kinds of ______.
A ______ is an arrangement of ______ composed of _____ in a repeating latice.
how do the words matter element atom crystal compound and molacule relate
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