Physical Science Review

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

Which of the following is NOT a characteristic of a chemical change?

Back

Change in shape.

Front

What is the relationship between mass and weight?

Back

Weight is directly proportional to mass.

Front

What is weight?

Back

Weight is the force exerted by gravity on an object.

Front

What is mass?

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms.

Front

How does friction affect motion?

Back

Friction opposes the motion of an object by creating a resistance force.

Front

What is friction?

Back

Friction is a force that resists the sliding or rolling of one surface over another.

Front

What force pulls objects toward the center of the Earth?

Back

Gravity.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies toward each other, especially the force that pulls objects toward the Earth.

Front

What does Newton's first law of motion state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.