Atomic Structure Vocabulary Quiz

The basic building block of matter, made of smaller parts called subatomic particles.

The smaller particles that make up an atom including protons, neutrons and electrons.

Positively charged particle found in the nucleus. The number of these identifies an element and make up half of an atom’s mass.

A neutrally charged particle that is found in the nucleus. It makes up the other half of the atom’s mass.

The smallest subatomic particle that has a negative charge. These orbit outside of the nucleus, and can move to other atoms.

Like charges __________ each other.

Opposite charges __________ each other.

The center area of an atom containing the protons and neutrons.

A substance made up of all the same types of atoms. EX: A piece of pure carbon is made up of only carbon atoms.

The number of protons in the nucleus of an atom.