Chemical & Physical Changes

Front

What kind of change is squeezing juice out of an orange?

Back

Physical Change: The juice is extracted without altering the chemical composition of the orange.

Front

What kind of change is baking a cake?

Back

Chemical Change: New substances are formed through the chemical reactions of the ingredients.

Front

What type of change occurs when a new substance is formed that has different properties from the original substances?

Back

Chemical Change: This involves a transformation that results in new chemical properties.

Front

Water freezes to form ice. What type of change is this?

Back

Physical Change: The state of water changes from liquid to solid, but its chemical composition remains the same.

Front

What kind of change is cutting paper?

Back

Physical Change: The paper is altered in shape but remains the same substance.

Front

Define a physical change.

Back

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

Front

Define a chemical change.

Back

A change that results in the formation of new chemical substances with different properties.

Front

What is an example of a physical change?

Back

Melting ice: Ice changes from solid to liquid but remains water.

Front

What is an example of a chemical change?

Back

Rusting of iron: Iron reacts with oxygen to form rust, a new substance.

Front

What happens during a chemical change?

Back

Bonds between atoms are broken and new bonds are formed, resulting in new substances.