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Mr. Lowe-Mixtures and Pure Substances QOU

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

A mixture is a type of matter in which parts are...

a)

separate and different

b)

mixed together

2.

When mixtures are combined they keep their own identities.

a)

True

b)

False

3.

Which type of mixture has the parts that are easy to see and recognize?

a)

Heterogeneous Mixtures

b)

Homogeneous Mixtures

4.

In a Homogeneous Mixtures the parts are...

(Choose all that Apply)

a)

easy to see and identify

b)

mixed together very well

c)

too small for our eyes to see individually

d)

easily separated

5.

An Example of a Heterogeneous Mixture would be...

(Choose all that apply)

a)

Pizza

b)

Salt Water

c)

Soil

d)

Salads

6.

An Example of a Homogeneous Mixture would be...

(Choose all that apply)

a)

Steel

b)

Lemonade

c)

Nuts and Bolts

d)

Earth's Atmosphere

7.

A solution is a type of a ____________________ Mixture

a)

Heterogeneous

b)

Homogeneous

8.

Many solutions are made by _____________ something into a liquid. (Choose the BEST response, only)

a)

mixing

b)

stirring

c)

dissolving

d)

adding

9.

Dissolving is a______________ change.

a)

Chemical

b)

Physical

10.

When a solid is dissolved into a liquid it seems to...

a)

float

b)

change the color of the liquid

c)

disappear

11.

Which of the following can speed up the dissolving a solid into a liquid? (Choose all that apply)

a)

Increasing the temperature of the liquid

b)

Making the particle sizes smaller

c)

Lowering the temperature of the liquid

d)

Stirring Vigorously

12.

In a mixture we _____ the parts.

a)

can

b)

cannot

13.

A ____________ is a material with a definite chemical composition.

a)

mixture

b)

solution

c)

pure substance

14.

Compounds are...

a)

Pure Substances

b)

Mixtures

c)

Solutions

15.

In a compound the original substances...

a)

maintain their unique identities

b)

often change their original properties

16.

Which of these are a compound? (Choose all that apply)

a)

Pure Water

b)

Table Salt

c)

Sea Water

d)

Carbon Dioxide

17.

A suspension is a liquid that has _______ particles floating in it.

a)

liquid

b)

gas

c)

solid

18.

Choose all that are Colloids

a)

Milk

b)

Soda

c)

Paint

d)

Fog

19.

Choose all that are Suspensions:

a)

Breakfast Cereal

b)

Sand Castles

c)

Salad Dressings

d)

Pure Water

20.

Choose all that are Solutions

a)

Cola

b)

Steel

c)

Sugar Water

d)

Carbon Monoxide