Classification of Matter

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 salt (NaCl).

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 hydrogen (H), oxygen (O), and gold (Au).

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout. Examples include saltwater and air.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform throughout. Examples include salad and sand.

Front

What are pure substances?

Back

Pure substances are materials that have a constant composition and consistent properties. They can be classified into elements and compounds.

Front

What are the two groups of pure substances?

Back

The two groups of pure substances are elements and compounds.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed from two or more elements chemically bonded, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is an example of a compound?

Back

An example of a compound is carbon dioxide (CO2), which consists of carbon and oxygen.

Front

What is an example of a homogeneous mixture?

Back

An example of a homogeneous mixture is vinegar, which has a uniform composition throughout.

Front

What is an example of a heterogeneous mixture?

Back

An example of a heterogeneous mixture is a bowl of cereal with milk, where the components can be seen and separated.