Flashcardizz Review for Chemistry Test

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. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and digestion.

Front

Is melting butter a chemical or physical change?

Back

Melting butter is a physical change.

Front

What happens to energy during a chemical change?

Back

Energy can be released, absorbed, or gained during a chemical change.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed without changing its composition, such as color, odor, and melting point.

Front

Is dissolving sugar in water a chemical or physical change?

Back

Dissolving sugar in water is a physical change.

Front

What is an example of a chemical property?

Back

An example of a chemical property is flammability, which describes how a substance reacts with fire.

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

What is an example of a chemical change?

Back

An example of a chemical change is the reaction of vinegar and baking soda, which produces carbon dioxide gas.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is conserved.