Mixtures and solutions

A ____ is a physical combination of two or more substances.

• suspension

• mixture

• matter

• solution

Mixtures that have parts that are not uniformly mixed together are called................. mixtures.

• heterogeneous

• homogeneous

Smoke is an example of a _____ because its suspended particles are small enough that they do not settle.

• colloid

• suspension

• positive

• negative

Rebecca made a mixture of raisins, nuts, and dried fruit for a snack. Which kind of mixture was Rebecca’s snack?

• solution

• colloid

• heterogeneous mixture

• suspension

When salt is placed in a glass of water and dissolves, it is an example of a................

• solution

• suspension

• colloid

While sitting in your house, you notice that there are particles of dust floating in the air. These particles of dust that are suspended in the air are an example of a(n) ____.

• solid

• solution

• aerosol

• gas

A mixture of gravel and sand is an example of a....................

• homogeneous mixture

• heterogeneous mixture

Which of the following would make sugar dissolve faster in a cup of water?

• Add cold water and stir.

• Let water evaporate away.

• Add warm water and stir

• Add more sugar and stir.

You pour two different types of cereal into one bowl. Is this an example of a mixture or a solution? Explain.

How are you able to determine the physical properties of a substance?

• By using the senses to smell, taste, hear, feel, or see it

• By comparing it to the substances that surround it

• By determining its placement on the periodic table of elements

• By observing how it reacts with other substances

• By observing its shape and reflectivity