unit 1
unit 2
unit 3
unit 4
100

what are neutrons

a subatomic particle of about the same mass as a proton but without an electric charge

100

what is a subscript 

a subscript letter, figure, or symbol.

100

what is force


A force is a push or pull upon an object resulting from the object's interaction with another object.

100

what is heat

energy that is transferred from one body to another as the result of a difference in temperature.

200

what are properties of nonmetals


brittle, dull, and poor conductors of heat and electricity.

200

what are atoms

the basic unit of a chemical element.

200

what is change in motion

When an object changes its motion, it is accelerating.

200

what is mantle

The mantle is the mostly-solid bulk of Earth's interior

300

what are electrons

a stable subatomic particle with a charge of negative electricity.

300

what are elements

a part or aspect of something abstract, especially one that is essential or characteristic.

300

what is net force

The net force is the vector sum of all the forces that act upon an object.

300

what is atmosphere 

the envelope of gases surrounding the earth or another planet.

400

what are properties of metal

solid,shiny,luster

400

what is a chemical symbol

Any character used to represent a quantity, an operation, a relation, or an abbreviation

400

what is inertia

a tendency to do nothing or to remain unchanged.

400

what is the largest ocean

The Pacific Ocean