PHYSICAL SCIENCE PRACTICE EOC

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus. For example, an atom with 29 protons and 35 neutrons has a mass number of 64.

Front

What are the four fundamental forces in nature?

Back

The four fundamental forces are gravity, electromagnetic force, strong nuclear force, and weak nuclear force. Friction is NOT one of these forces.

Front

What is Newton's Third Law of Motion?

Back

Newton's Third Law states that for every action, there is an equal and opposite reaction. For example, when a student kicks a ball, the ball exerts an equal force back on the student.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a compound breaks down into simpler substances. For example, the breakdown of water into hydrogen and oxygen.

Front

How does heat transfer occur through radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. An example is the heat from the sun warming a car.

Front

What is the difference between conduction and convection?

Back

Conduction is the transfer of heat through direct contact, while convection is the transfer of heat through the movement of fluids (liquids or gases).

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = mass (m) × acceleration (a). For example, a 2.5 kg ball kicked with a force of 500 N has an acceleration of 200 m/s².

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of a synthesis reaction?

Back

A synthesis reaction is when two or more reactants combine to form a single product. For example, hydrogen gas and oxygen gas combine to form water.

Front

What is the role of neutrons in an atom?

Back

Neutrons are neutral particles in an atom's nucleus that contribute to the mass of the atom and help stabilize the nucleus.