Correct, Atoms are the smallest unit of matter, 3 subatomic particles make up atoms, Protons are always positive, Protons contribute to an atoms mass, Neutrons have no charge, Neutrons contribute to an atoms mass, Electrons are negative, Electrons are found outside the nucleus, Pronts & Neutrons are found inside the nucleus, Incorrect, Electrons have no chage, Electrons are found in the nuclues with protons, Neutrons are negative, Protons are found outside the nucleus, Electrons are big, An atom's mass comes from neutrons and electrons, It is easy to see atoms, Atoms make up only living things.

Atomic Structure

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