Mixtures and Solutions

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together. Examples include salad, air, and sand.

Front

What is a solution?

Back

A solution is a special type of mixture where one substance (solute) is completely dissolved in another (solvent). An example is saltwater.

Front

What is the difference between a mixture and a compound?

Back

A mixture is made of two or more substances that can be separated, while a compound is a substance formed when two or more elements are chemically bonded together.

Front

What is solubility?

Back

Solubility is the ability of a substance (solute) to dissolve in a solvent at a given temperature and pressure.

Front

What does concentrated mean in terms of solutions?

Back

A concentrated solution has a large amount of solute dissolved in a small amount of solvent.

Front

What does dilute mean in terms of solutions?

Back

A dilute solution has a small amount of solute dissolved in a large amount of solvent.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice. The ice changes from solid to liquid but remains water.

Front

What is a chemical change?

Back

A chemical change occurs when substances combine or break apart to form new substances. An example is digestion.

Front

What is the role of a solvent in a solution?

Back

The solvent is the substance that dissolves the solute. In saltwater, water is the solvent.

Front

What is the role of a solute in a solution?

Back

The solute is the substance that is dissolved in the solvent. In saltwater, salt is the solute.