Parts of an Atom

All substances are made from tiny particles called

• molecules
• atoms
• compounds
• neutrons

The center of the atom is known as the 

• core
• nucleus
• neutron
• shell

The two subatomic particles found in the nucleus are

• protons and neutrons
• protons and electrons
• electrons and neutrons
• protons and nucleotrons

The subatomic particle found outside the nucleus is the

• atom
• electron
• proton
• neutron

The subatomic particle with a positive charge is the

• electron
• proton
• neutron
• nucleus 

The subatomic particle with a negative charge is the

• electron
• proton
• neutron
• nucleus 

The subatomic particle with a neutral charge is the

• electron
• proton
• neutron
• nucleus 

If the number of protons equal the number of _____, the atom will have no charge

• protons
• neutrons
• electrons
• nucleus

How many electrons can the first three energy levels hold (up to argon)

• 8, 8, 8
• 2, 8, 8
• 2, 4, 8
• 8, 8, 2

Which is the smallest subatomic particle

• proton
• neutron
• electron
• nucleus