Chemical vs Physical Changes

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition.

Front

Give an example of a chemical change.

Back

Baking a cake is an example of a chemical change because new substances are formed during the baking process.

Front

Give an example of a physical change.

Back

Evaporating liquid is an example of a physical change because the substance remains the same, just in a different state.

Front

What happens during a chemical change?

Back

During a chemical change, bonds between atoms are broken and new bonds are formed, resulting in new substances.

Front

What happens during a physical change?

Back

During a physical change, the substance may change shape, size, or state, but its chemical identity remains the same.

Front

Is toasting bread a chemical or physical change?

Back

Toasting bread is a chemical change because it alters the chemical structure of the bread.

Front

Is melting ice a chemical or physical change?

Back

Melting ice is a physical change because the water remains H2O in both solid and liquid states.

Front

What is an example of a chemical change in nature?

Back

Photosynthesis in plants is a chemical change where sunlight helps convert carbon dioxide and water into glucose.

Front

What is an example of a physical change in nature?

Back

The changing of seasons is a physical change as it affects the appearance of the environment without altering the substances.