THe smallest part of a substance is the

A Pure Substance that can not be changed into simplier substances is

Two or more different substances combined chemically are called

THis can be separated by physical means such as filtering.

A mixture that is uniform throughout where the substances are not easily visible is called:

Choose the two pure substances

What is formed when two identical atoms are chemically combined?

Iron is classified as what?

Since many substances are visible, salad dressings are classified as what?

Compounds are created from combining 2 or more ?

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