2/18 Bellringer: Physical and Chemical Changes Pd 1

Front

What is a chemical change?

Back

A process where one or more new substances are formed, such as during photosynthesis.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance, such as melting or freezing.

Front

Give an example of a chemical change.

Back

Photosynthesis, where plants convert sunlight into energy and produce glucose.

Front

Give an example of a physical change.

Back

Melting of ice into water.

Front

What happens during a physical change?

Back

The form of a substance changes, but its chemical identity remains the same.

Front

What happens during a chemical change?

Back

The original substances are transformed into new substances with different properties.

Front

Is freezing juice a physical or chemical change?

Back

Physical change.

Front

Is breaking a cracker into pieces a physical or chemical change?

Back

Physical change.

Front

What is an indicator of a chemical change?

Back

The production of gas, change in color, or formation of a precipitate.

Front

What is an indicator of a physical change?

Back

Change in state, such as solid to liquid or liquid to gas.