Pure Substances and Mixtures Flashcard Review

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 that retain their individual properties. Mixtures can be homogeneous or heterogeneous.

Front

What does triatomic mean?

Back

Triatomic refers to a molecule that is composed of three atoms.

Front

Is salt water a pure substance or a mixture?

Back

Salt water is a mixture.

Front

Is gold a pure substance or a mixture?

Back

Gold is a pure substance.

Front

Is H2O2 a pure substance or a mixture?

Back

H2O2 (hydrogen peroxide) is a pure substance.

Front

Is CaCO3 a pure substance or a mixture?

Back

CaCO3 (calcium carbonate) is a pure substance.

Front

What is an example of a homogeneous mixture?

Back

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

Front

What is an example of a heterogeneous mixture?

Back

An example of a heterogeneous mixture is a salad, where the individual components 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 substance formed when two or more elements chemically bond together.