Chemical and Physical Properties and Changes

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with acid.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed without changing its chemical composition, such as color or density.

Front

What is a chemical change?

Back

A process that involves the transformation of one substance into another, resulting in a change in chemical properties.

Front

What is a physical change?

Back

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

Front

Give an example of a chemical property.

Back

Reactivity with acid.

Front

Give an example of a physical property.

Back

Color, density, or boiling point.

Front

What evidence indicates a chemical change has occurred?

Back

Signs include color change, gas production, temperature change, or the formation of a precipitate.

Front

What happens to the wick of a candle when it burns?

Back

It undergoes a chemical change, producing smoke and changing color.

Front

What is the significance of vinegar's low pH?

Back

It indicates that vinegar is acidic and can react with bases, demonstrating a chemical property.

Front

What occurs when vinegar is mixed with baking soda?

Back

A chemical change occurs, producing carbon dioxide gas and creating bubbles.