Pure Substances & 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

Define homogeneous mixture.

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include saltwater and air.

Front

Define heterogeneous mixture.

Back

A heterogeneous mixture is a mixture that does not have a uniform composition. Examples include salad and sand.

Front

What is a solution?

Back

A solution is a type of homogeneous mixture formed when one substance (the solute) is dissolved in another (the solvent).

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved in a solution, while a solvent is the substance that does the dissolving.

Front

What is matter?

Back

Matter is anything that has mass and occupies space.

Front

Are elements pure substances?

Back

Yes, elements are considered pure substances because they consist of only one type of atom.

Front

What is an example of a heterogeneous mixture?

Back

An example of a heterogeneous mixture is vegetable salad, where the individual components can be seen and separated.

Front

What is an example of a homogeneous mixture?

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An example of a homogeneous mixture is lemonade, where the components are evenly distributed.