General Science

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Atom Structure

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10 Terms

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What are atoms made of?

Protons, neutrons, and electrons

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Where are protons and neutrons found?

In the nucleus

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What particle has a negative charge?

Electrons

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What determines the element’s identity?

The number of protons

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What is the formula for mass number?

Protons + Neutrons

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What happens if an atom gains electrons?

It becomes negatively charged (anion)

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What happens if an atom loses electrons?

It becomes positively charged (cation)

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What is an element?

A group of atoms with the same number of protons

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What’s a molecule?

A combination of atoms bonded together

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What is a neutral atom?

An atom with equal protons and electrons