Pure Substances vs. Mixtures

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties. Mixtures can be homogeneous or heterogeneous.

Front

Is air a pure substance or a mixture?

Back

Air is a mixture because it contains various gases like nitrogen, oxygen, and carbon dioxide.

Front

Is Dr. Pepper a pure substance or a mixture?

Back

Dr. Pepper is a mixture because it contains various ingredients including water, sugar, and flavorings.

Front

Is salt a pure substance or a mixture?

Back

Salt is a pure substance because it is made up of only sodium chloride (NaCl) with a consistent composition.

Front

Is aluminum a pure substance or a mixture?

Back

Aluminum is a pure substance as it consists of only aluminum atoms.

Front

Is nail polish a pure substance or a mixture?

Back

Nail polish is a mixture because it contains various chemicals and pigments.

Front

What is an example of a homogeneous mixture?

Back

An example of a homogeneous mixture is saltwater, where the salt is evenly distributed throughout the water.

Front

What is an example of a heterogeneous mixture?

Back

An example of a heterogeneous mixture is a salad, where the different ingredients can be seen and separated.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a pure substance formed when two or more elements chemically combine.