Which sub atomic particles make up the atom?

• Electrons Only

• Protons Only

• Electrons and Protons

• Electrons, Protons and Neutrons

What charge do each of the sub atomic particles have?

• Protons (-), Electrons (+), Neutrons (0)

• Protons (+), Electrons (-), Neutrons (0)

• Protons (0), Electrons (-), Neutrons (+)

• Protons (+), Electrons (0), Neutrons (-)

How many protons does a sodium atom have?

• 23

• 12

• 11

How many electrons does a sodium atom have?

• 23

• 12

• 11

How many neutrons does a sodium atom have?

• 23

• 12

• 11

The mass number of an element tells you the number of...?

• Protons Only

• Protons and Electrons

• Neutrons Only

• Protons and Neutrons

The atomic number of an element tells you the number of ...?

• Protons

• Protons and Neutrons

• Electrons

• Neutrons

Ions are formed when atoms lose or gain ... ?

• Protons

• Neutrons

• Electrons

Isotopes are atoms with the same number of protons but different numbers of ...?

• Neutrons

• Electrons

Atoms are always neutral - they have no overall charge?

• True

• False