PHYSICAL SCIENCE FINAL EXAM

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

The statement "to every action there is an equal and opposite reaction" is ____.

Back

Newton's third law of motion.

Front

What is the atomic number of Silicon?

Back

14.

Front

What is the atomic mass of Silicon?

Back

28.

Front

How many neutrons does Silicon have?

Back

14.

Front

What is the formula to calculate acceleration?

Back

Acceleration = Force / Mass.

Front

If a 10-kg crate is pushed with a force of 30 N, what is its acceleration?

Back

3 m/s².

Front

What happens when two forces act in the same direction?

Back

Their strengths are added.

Front

What is Newton's first law of motion?

Back

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

Front

What is Newton's second law of motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.