Atomic Mass Review

How many protons does lithium have?

• 3

• 4

• 7

What is the mass number of bromine?

• 35

• 45

• 80

• 79.904

How many neutrons does this bromine atom have?

• 35

• 45

• 80

What two particles determine the mass number?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

What is the mass number of this Neon atom?

• 10

• 11

• 21

• 20

What is the atomic number of this element?

• 12

• 24

• 23

Which subatomic particle has a +1 charge?

Which subatomic particle has no charge (neutral)?

What charge do electrons have?

• +1

• 0

• -1

What is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?

• 22
• 11
• 34
• 23