Energy and Changes

Front

What is a precipitate?

Back

A solid that forms when two liquids are mixed together.

Front

What causes iron to change from shiny to rusty?

Back

A chemical reaction.

Front

What type of change occurs when baking cupcakes?

Back

Chemical Change.

Front

What is the best example of a new substance forming?

Back

Lighting a match.

Front

What happens when you touch something that feels cold?

Back

Heat from your hand moves into the cold substance.

Front

Define chemical change.

Back

A process where substances combine or break apart to form new substances.

Front

Define physical change.

Back

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

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.