Physical Science Review

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. Examples include melting, freezing, and cutting.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include baking a cake, rusting of iron, and burning wood.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

How can you change a solid to a liquid?

Back

You can change a solid to a liquid by adding heat.

Front

How can you change a liquid to a solid?

Back

You can change a liquid to a solid by removing heat.

Front

What is a parallel circuit?

Back

A parallel circuit is an electrical circuit where the components are connected across common points or junctions, providing multiple paths for current to flow.

Front

What is a series circuit?

Back

A series circuit is an electrical circuit in which components are connected end-to-end, so that the current flows through each component in turn.

Front

What happens to chocolate when it is cooled in the refrigerator?

Back

When chocolate is cooled in the refrigerator, it solidifies again after melting.

Front

What is an example of a physical change?

Back

Cutting an orange into wedges is an example of a physical change.

Front

What is an example of a chemical change?

Back

Baking a cake is an example of a chemical change.