Atoms and Molecules Quiz

In a ball-and-stick model, the balls represent:

• Atoms

• Molecules

• Protons only

• Electrons

In a ball-and-stick model, the sticks represent:

• Atoms

• Chemical bonds

• Energy

• Neutrons

A molecule is made of:

• One atom

• Two or more atoms joined together

• Energy only

• Electrons only

What does a large ball in a model usually show?

• A smaller atom

• A proton

• A different type of atom

• A broken atom

In a model of water (H₂O), how many hydrogen atoms are there?

• 1

• 2

• 3

• 0

In a model of carbon dioxide (CO₂), how many oxygen atoms are there?

• 1

• 2

• 3

• 4

What holds atoms together in a molecule?

• Magnets

• Bonds

• Water

• Energy waves

What is a molecule?

• A single atom

• A group of atoms bonded together

• A type of cell

• A liquid

In a ball-and-stick model of O₂, how many oxygen atoms are shown?

• 1

• 2

• 3

• 4

Which model would show the most detail?

• Ball-and-stick model

• Picture of a rock

• Drawing of a tree

• A weather map