6th grade

What is Niels Bohr known for?

• the periodic table
• the simple atom model

This kind of bonding occurs when atoms share electrons...

• covalent
• ionic

Substances containing one kind of atom are known as...

• elements
• molecules

The study of matter is called...

• physics
• chemistry

A material through which electricity cannot flow is a(n)...

• insulator
• conductor

Mendeleev is most known for the...

• simple atom model
• the periodic table

Horizontal rows on the periodic table are called...

• columns
• periods

A ______is a material that reduces the flow of electricity.

• conductor
• resistor

This uses a magnet to convert motion into electrical energy...

• air conditioner
• generator

Molecules formed from two or more elements are called...

• groups
• compounds