Atomic Struture

The subatomic particle with a positive charge.

• neutron
• electron
• proton
• nucleus

The subatomic particle with no charge.

• neutron
• quark
• electron
• proton

The subatomic particle with a negative charge.

• neutron
• photon
• proton
• electron

The two subatomic particles that have about the same mass.

• electron and proton
• neutron and electron
• neutron and proton
• proton and nucleus

The smallest subatomic particle which has a very tiny mass.

• Proton
• Electron
• Neutron
• Photon

Protons and neutrons are found in the ___ of an atom.

• Nucleus
• Electron cloud
• Empty space
• Center

Electrons are found in the ___ of an atom.

• Nucleus
• Center
• Empty space
• Electron cloud

Which subatomic particle is the identity of the atom?

• Electron
• Neutron
• Proton
• Cloud

The atomic number of an element is the same as the number of ______.

• Protons
• Neutrons
• Electrons
• Nuclei

The mass number of an atom is...

• the number of protons minus the number of neutrons
• the number of protons and neutrons added together
• the number of protons and electrons added together
• the number of neutrons minus the electrons