Physical Science Unit Review

What is the smallest unit of a chemical compound that still has the properties of that compound?

• A nucleus.

• A molecule

• An element.

• An atom.

What is an element?

• A type of atom with the same number of protons.

• A type of atom with the same number of neutrons.

• A substance made of the same type of atom.

• A substance made of many types of atoms.

What do we call the center region of an atom?

• The eye.

• The epicenter

• The nucleus.

• The center.

Which part of the atom has a positive charge?

• The electron.

• The proton.

• The nucleus.

• The neutron.

An atom is mostly made of ___.

• protons

• neutrons

• electrons

• empty space

What term is used to describe the point at which a gas changes state and becomes a liquid?

• Condensation

• Evaporation

• Melting

• Freezing

How long was Teddy gone before he realized he should return home?

• 5 seconds

• 45 seconds

• 2 seconds

• 10 seconds

Marcus and Jacob competed in a bicycle race. Read the scenarios listed below and choose which one best matches the graph.

• Marcus gave Jacob a 10km head start.

• Marcus and Jacob finished the race at the same time

• Jacob didn’t need to bike as far as Marcus.

• Marcus and Jacob both biked 50km.

When water evaporates, it is considered a ___.

• plasma

• solid

• liquid

• gas

Subatomic particles with a negative charge, these are found circling the nucleus of the atom.

• Electrons

• Neurons

• Neutrons

• Protons