Mixtures and Solutions

What is a mixture?

• A combination of two or more substances that cannot be separated.

• A combination of two or more substances that can easily be separated.

• A single substance that dissolves in water.

• A substance that changes its physical properties.

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Which of the following methods can be used to separate mixtures?

• Distillation

• Evaporation

• Using a magnet

• Dissolving

What is a key characteristic of solutions?

• They can always be easily separated.

• They are formed when substances do not dissolve.

• They cannot be easily separated.

• Their physical properties remain unchanged.

What happens to the physical properties of a substance when it forms a solution?

• They remain the same.

• They change.

• They become insoluble.

• They become visible.

Which of the following is an example of an insoluble substance?

• Salt

• Sugar

• Sand

• Water