8th grade science SOL review

Front

What is a heating curve?

Back

A heating curve is a graph that shows the change in temperature of a substance as it is heated over time, illustrating phase changes such as melting and boiling.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a substance changes from a liquid to a gas.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together, such as NH3 (ammonia).

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in g/cm³.

Front

How is work defined in science?

Back

Work is defined as the transfer of energy that occurs when a force is applied to an object and the object moves in the direction of the force.

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects, often caused by friction.

Front

What is an example of work being done?

Back

A car being towed down the street is an example of work being done because a force is applied and the car moves.

Front

What happens to the temperature of a substance during a phase change?

Back

During a phase change, the temperature of a substance remains constant while it absorbs or releases heat.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.