Science Unit 2: TEST Review

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances. Example: Burning of wood.

Front

What are examples of a physical change of matter?

Back

Examples of physical changes include cutting paper and freezing water.

Front

What is temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in an object.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Example: Macaroni rising and falling in heated water.

Front

What is a molecule?

Back

A molecule is more than one atom bonded together.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

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

Back

A physical change does not change the substance's chemical identity, while a chemical change results in the formation of new substances.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves.