8th Grade Science Winter Benchmark Review

Front

What type of energy is applied when pulling a handle to wind up a rope?

Back

Mechanical energy

Front

In which state of matter are molecules in contact but free to move?

Back

Liquid

Front

What does the atomic number of an element represent?

Back

The number of protons in an atom.

Front

What is an example of a physical property observed in an experiment?

Back

Cornstarch felt slippery.

Front

What energy transformation occurs when using a hair dryer?

Back

Electrical to mechanical.

Front

What is potential energy?

Back

Energy stored in an object due to its position or state.

Front

What is kinetic energy?

Back

Energy of an object in motion.

Front

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

Back

A physical change alters the form of a substance, while a chemical change alters its composition.

Front

What is the definition of matter?

Back

Anything that has mass and takes up space.

Front

What are the three states of matter?

Back

Solid, liquid, gas.