Pure Substances and Mixtures Review

Pure Substances and Mixtures Review

7th Grade

7 Qs

Student preview

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Pure Substances and Mixtures Review

Pure Substances and Mixtures Review

Assessment

Quiz

Created by

Kenya Forsyth

Science

7th Grade

9 plays

Medium

NGSS
MS-PS1-2

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a pure substance?

A combination of two or more substances.

A substance that is not combined with anything else.

A type of mixture.

A substance that can be easily separated into pure substances.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a colloid?

Salt dissolved in water.

Sand mixed with water.

Gel.

Sugar and water shaken together.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main characteristic of a solution?

It is cloudy and the substances settle to the bottom.

It is a pure substance.

It is a uniform mixture where one substance is dissolved evenly throughout another.

It is a mixture that can be easily separated by settling or sifting.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when you shake a container of sand and water?

The sand dissolves completely in the water.

The sand and water form a solution.

The sand will settle to the bottom of the container and the water will become cloudy.

The sand and water form a colloid.

Tags

NGSS.MS-PS1-2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an emulsifier?

A substance that makes a solution clear.

A substance that can be added to mixtures to allow the liquids to remain completely mixed.

A substance that separates a colloid.

A substance that helps to settle the particles in a suspension.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the 'base' in an emulsion?

The solid part of the mixture.

The substance that is broken into tiny droplets.

The liquid in which the droplets are dispersed.

The substance added to make the mixture clear.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a pure substance?

Water

Oxygen

Wood

Diamonds