Identifying Mixtures

A mixture is a combination of two or more substances in which no new substances are formed.

• Ture

• False

According to particle model, the diagram shows a:

• Mixture

• Pure substance

Tags

NGSS.MS-PS1-1

Explain why sea water is a mixture whereas purified water is not?

Identify what mixtures can be made from.

• Gases only

• Solid, liquids and gases

• Liquids and gases, but not solids

• Liquids only

Select the statement that best describes a mixture of eggs and air while being whisked.

• The longer eggs are whisked, the more solid they become. This is because more air is being added to the mixture.

• The amount of time spent whisking eggs makes no difference to the mixture. Its properties don’t change.

• The longer eggs are whisked, the fluffier they become. This is because more air is being added to the mixture.

The suspended particles in colloids are smaller than the suspended particles in suspensions.

• True

• False

Identify which of the following sentences are true.

• Suspensions do not separate into their components if left to stand

• Colloids separate into their components if left to stand

• Suspensions separate into their components if left to stand

• None of these are true

Determine which two words complete the sentence correctly.

If small particles of rock mixed in water are ____________ enough, they will settle out as ____________ .

• large, sediment

• small, sediment

• small, colloid

• large, emulsion

Complete the following sentence.

A solution is a type of mixture in which the particles:

• are extremely small

• can be seen under a powerful microscope

• scatter light

• settle out to form a sediment

Identify which list orders the three types of mixtures from largest to smallest particle size.

• Solutions, colloids, suspensions

• Suspensions, solutions, colloids

• Colloids, suspensions, solutions

• Suspensions, colloids, solutions