Positively charged sub-atomic particle

negatively charged sub atomic particle

neutral sub-atomic particle

Dense, positively charged center of an atom

Number of Electrons and Protons in a neutral atom

Smallest particle into which an element can be broken and still maintain the properties of that element.

How can you tell one atom from another?

Electrons stay within the cloud because

Pure substance made of only one type of atom

Two or more atoms combined

Two or more elements chemically combined

All compounds are molecules, but all molecules are not compounds.

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