Unit 1 Test

What is the center of the atom called?

Which subatomic particle has a +1 charge?

Which subatomic particle has no charge (neutral)?

Quarks are the building blocks for which 2 particles?

• protons

• neutrons

• electrons

What charge do electrons have?

• +1

• 0

• -1

What is the overall charge of an ATOM?

• +1

• 0

• -1

What particles are atoms made of? (Check ALL that apply:)

• Protons

• Neutrons

• Electrons

• Nucleus

Which two particles have mass?

• Protons

• Neutrons

• Electrons

• Nucleus

How many valence electrons in this diagram:

• 1

• 3

• 5

• 7

How many valence electrons in this diagram:

• 1

• 3

• 5

• 7