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__________

• Suspension

• Solution

• colloid

• heterogeneous mixture

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

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.

In a saltwater solution, the salt is the __________.

• solvent

• molecule

• part

• solute

Mixtures CANNOT be separated.

• True

• False

You know a creating a mixture is NOT a chemical change because _____________.

• it cannot be separated.

• it will bubble and give off heat

• it smokes when mixed.

• it can be separated by hand or with tools