Physical Science Final Exam Review 2023

Front

What is a similarity between ionic and covalent bonds?

Back

Both make the elements more stable.

Front

What are three examples of physical changes?

Back

Boiling of water, blowing up a balloon, and melting a candle.

Front

What happens when unequal and opposing forces are applied to an object at the same time?

Back

The object will move in the direction of the net force.

Front

How do you calculate acceleration?

Back

Acceleration is calculated by the change in velocity divided by the time taken.

Front

What is the formula for calculating work done?

Back

Work done = Force x Distance.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J).

Front

What is the acceleration of a drag racer that goes from 0 m/s to 200 m/s in 5 seconds?

Back

The acceleration is 40 m/s².

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not change the substance's chemical identity, while a chemical change results in the formation of new substances.

Front

What is the definition of force?

Back

Force is an interaction that, when unopposed, will change the motion of an object.