Physical Science Final Exam Review

Front

What happens to light when it travels from air into water?

Back

Light bends as it hits the water because it slows down.

Front

What is salt (NaCl) classified as?

Back

Salt is a compound.

Front

How many protons does an atom with atomic number 6 have?

Back

6 protons.

Front

What is the term for the rate of change of velocity of an object?

Back

Acceleration.

Front

What causes the change in pitch of a sound as a source moves towards or away from an observer?

Back

The change in frequency of the sound wave.

Front

What is the definition of a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the formula for calculating acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.

Front

What is the principle of conservation of mass?

Back

In a closed system, mass is neither created nor destroyed during a chemical reaction.

Front

What is the definition of momentum?

Back

Momentum is the product of an object's mass and its velocity.