Unit 2 Test_Atoms and the Periodic Table (Modified)

What charge does a neutron have?

• 
• 
• 

What charge does a proton have?

• 
• 
• 

What charge does a electron have?

• 
• 
• 

How many neutrons are in the following element?

• 7

• 14

• 21

The Atomic number is known as the _______

• Number of Protons

• Number of Neutrons

• Number of Neutrons + Protons

JJ Thompson discovered which version of the atom?

• 
• 
• 
• 

Ernest Rutherford discovered which version of the atom?

• 
• 
• 
• 

Each column (vertical) in the periodic table is called a _________ .

• Period

• Group

• Cluster

Each row (horizontal) in the periodic table is called a _________ .

• Period

• Group

• Cluster

Properties, or characteristics, of metals include: (select all that apply)

• Good conductors of heat

• Poor conductors of electricity

• Malleable

• Dull

• Ductile