Atomic Mass

Which Number is the Atomic Number ?

• The Middle Number 0.

• The Bottom Number.

• The top number.

• There is No atomic Number.

What is the Atomic Mass Number?

Which 2 Atomic Atoms have the same number of elements ?

• The protons and the neutrons.

• The electrons and the protons.

• The electrons and the neutrons.

• They all have different numbers.

An Atom is the __ in the World.

What is the atomic mass equation ?

• mass number = protons + neutrons.

• mass number = electrons + neutrons.

• mass number = protons + electrons.

What electrical charge does a proton have?

• +1
• 0
• -1
• +2

Complete the missing label on the diagram.

• Neutron
• Centre
• Nucleus
• Sub atomic particle

Which particle is negatively charged?

• proton
• atom
• neutron
• electron

How many electrons does this atom have?

• 2

• 4

• 6

• 10