Physical and Chemical Changes

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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, altering the identity of the original substance.

Front

Give an example of a physical change.

Back

Examples include melting ice, boiling water, or breaking a glass.

Front

Give an example of a chemical change.

Back

Examples include rusting iron, burning wood, or baking a cake.

Front

What happens to the identity of a substance during a physical change?

Back

The identity of the substance remains the same during a physical change.

Front

What happens to the identity of a substance during a chemical change?

Back

The identity of the substance changes during a chemical change.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Dissolving sugar in water is a physical change.

Front

Is burning paper a physical or chemical change?

Back

Burning paper is a chemical change.

Front

What is an indicator of a chemical change?

Back

Indicators of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Front

What is rust?

Back

Rust is a chemical compound formed when iron reacts with oxygen and moisture, indicating a chemical change.