Atomic Structure Vocabulary

Match each subatomic particle with the correct definition.

• Electron

• subatomic particle that has a positive

  charge and that is located in the nucleus of an

  atom.

• Proton

• subatomic particle that has no charge

  and that is located in the nucleus of an atom.

• Neutron

• subatomic particle that has a negative

  charge.

A charged particle that forms when an atom

or group of atoms gains or loses one or more

electrons.

A positively charged ion is called a(n) ​ (a)  

A negatively charged ion is called a(n) ​ (b)  

• cation

• anion

• ion

• isotope

Dense, positively charged mass located in the center of an atom.

Positively charged subatomic particle found in the nucleus.

Negatively charged subatomic particle found its nucleus.

Neutral subatomic particles found in the nucleus.

The sum of the protons and neutrons in the nucleus.

Atoms of the same element that have different numbers of neutrons and different mass numbers.

The possible energies that electrons in an atom can have.