Review Physical and CHemical Properties and Changes

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances with different chemical properties.

Front

True or False: Some physical changes involve chemical reactions.

Back

False

Front

What is an example of a physical change?

Back

Bending metal is an example of a physical change.

Front

Can a physical change result in a color change? Provide an example.

Back

Yes, a physical change can result in a color change. For example, a red candy dissolving in water turns the water pink.

Front

What does reactivity refer to in terms of chemical properties?

Back

Reactivity refers to how readily a substance undergoes a chemical reaction with other substances.

Front

What is an example of reactivity?

Back

Fluorine gas spontaneously igniting a concrete block at room temperature is an example of reactivity.

Front

What causes iron to change from shiny to rusty?

Back

The change from shiny to rusty iron is caused by a chemical reaction, specifically oxidation.

Front

Define a physical property of matter.

Back

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

Front

List three examples of physical properties.

Back

Three examples of physical properties include color, melting point, and density.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that becomes evident during a chemical reaction, indicating how a substance interacts with other substances.