CHEM U3 Test Review #1 (Mixtures)

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include copper (Cu), oxygen (O), and gold (Au).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and sodium chloride (NaCl).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. The individual components retain their properties. Examples include air and salt water.

Front

Is copper a compound, element, or mixture?

Back

Copper is an element.

Front

Is tap water a compound, element, or mixture?

Back

Tap water is a mixture.

Front

Are clouds a compound, element, or mixture?

Back

Clouds are a mixture.

Front

Is salt water a compound, element, or mixture?

Back

Salt water is a mixture.

Front

Is air a compound, element, or mixture?

Back

Air is a mixture.

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically bonded, while a mixture consists of two or more substances that are not chemically bonded.

Front

Can mixtures be separated by physical means?

Back

Yes, mixtures can be separated by physical means such as filtration, distillation, or evaporation.