8th Grade Atoms

Front

All matter is composed of __________.

Back

atoms

Front

A proton has a ___________ charge.

Back

positive

Front

__________ is anything that has mass and takes up space.

Back

matter

Front

For a neutral atom, which 2 subatomic particles must be equal in number?

Back

protons and electrons

Front

Negative charge, found orbiting nucleus, mass is almost zero.

Back

electron

Front

The center of an atom is called the __________.

Back

nucleus

Front

The three main subatomic particles are protons, neutrons, and __________.

Back

electrons

Front

Protons are found in the nucleus and have a __________ mass compared to electrons.

Back

much greater

Front

Neutrons have a __________ charge.

Back

neutral

Front

The atomic number of an element is determined by the number of __________ it has.

Back

protons