Physical and Chemical Properties/Changes

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, indicating how a substance interacts with other substances.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing the substance's chemical identity.

Front

Define flammability.

Back

Flammability is a chemical property that describes the ability of a substance to burn in the presence of oxygen.

Front

What is a chemical change?

Back

A process where one or more substances are transformed into different substances with new chemical and physical 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 change.

Back

Mixing vinegar and baking soda produces carbon dioxide gas, indicating a chemical change.

Front

Give an example of a physical change.

Back

Melting ice into water is a physical change as it alters the state but not the chemical composition.

Front

What happens during a phase change?

Back

A substance changes from one state of matter to another (e.g., solid to liquid) without changing its chemical identity.

Front

What is density?

Back

Density is a physical property defined as mass per unit volume of a substance.

Front

How does temperature affect physical changes?

Back

Temperature can influence the state of matter; for example, heating can cause solids to melt into liquids.