The smallest part of an element.

Gives the nucleus its positive charge

Gives the nucleus more mass, but doesn't change its charge

Most of the mass of an atom can be found in the

The lightest subatomic particle

Which two subatomic particles are equal when an atom is neutral?

The two subatomic particles that are about the same size:

The subatomic particle that decides which element you have:

Without electrons atoms would carry

Electrons are found in the

The mass of an electron is

Charge of a single electron

The maximum number of electrons in the first shell:

Element with 3 protons and 3 electrons:

The number of protons determines what ___________________ a particular atom belongs to.

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