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Substances and Mixtures

Total questions: 40

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

Substances are classified as acids and bases. The pH scale goes from 0-14. Sodium Hydroxide has a pH of 13. Which of these best describes sodium hyrdoxie?

a)

strong base

b)

strong acid

c)

weak base

d)

weak acid

2.

Which of the following are pure substances?

a)

Elements

b)

Compounds

c)

Mixtures

d)

Elements and compounds

e)

Elements, compounds, and mixtures

3.

How are compounds and mixtures different?

a)

Compounds are chemically bound while mixtures are physically bound

b)

Compounds must be chemically separated while mixtures can be physically separated

c)

Elements in compounds have different properties than by themselves - in mixtures, elements retain their properties

d)

all of the above

4.

True or False: Compounds contain multiple different types of atoms.

a)

true

b)

false

5.

Classify the following as an element, mixture, or compound: Water

a)

element

b)

compound

c)

mixture

6.

Classify the following as an element, compound, or mixture: air

a)

element

b)

compound

c)

mixture

7.

Does this picture show a heterogeneous or homogeneous mixture?

a)

Heterogeneous

b)

Homogeneous

c)

Neither, it is a compound

8.

Which type of substance is always made up of a single type of atom?

a)

mixture

b)

element

c)

compound

9.

What color will Litmus paper turn in an acid?

a)

red

b)

blue

10.

What color will Litmus paper turn in a base?

a)

red

b)

blue

11.

A substance releases lots of hydronium (H+) in water. Is it an acid or a base?

a)

acid

b)

base

12.

Which of the following lists colloids, suspension, and solutions in order from smallest to largest particle size?

a)

colloid, suspension, solution

b)

suspension, colloid, solution

c)

solution, colloid, suspension

d)

solution, suspension, colloid

13.

When testing the Tyndall Effect, which of the following will occur in a solution?

a)

The Tyndall Effect does not use light

b)

The light will bounce off the particles

c)

The light will spread and disperse

d)

The light will pass straight through

14.

Detergent, soap, and baking soda contain acids

a)

True

b)

False

15.

A suspension is a heterogeneous mixture.

a)

True

b)

False

16.

What is shown in the picture?

a)

element

b)

compound

c)

mixture

17.

Which is shown in the picture?

a)

element

b)

compound

c)

mixture

18.

Which is shown in the picture?

a)

element

b)

compound

c)

mixture

19.

Which is shown in the picture?

a)

element

b)

compound

c)

mixture

20.

Which is shown in the picture?

a)

element

b)

compound

c)

mixture

21.

Which is shown in the picture?

a)

element

b)

compound

c)

mixture

22.

Organic or Inorganic?

a)

Organic

b)

Inorganic

23.

Organic or Inorganic?

a)

Organic

b)

Inorganic

24.

Is carbon dioxide organic or inorganic?

a)

organic

b)

inorganic

25.

Is sodium bicarbonate organic or inorganic?

a)

organic

b)

inorganic

26.

Which lists metals, metalloids, and nonmetals in order from lowest to highest conductivity of heat and electricity?

a)

metals, nonmetals, metalloids

b)

nonmetals, metalloids, metals

c)

metals, metalloids, nonmetals

d)

nonmetals, metals, metalloids

27.

Which of the following is a property of acids?

a)

release OH-

b)

taste bitter

c)

ph < 7

d)

feel slippery

28.

What is the only neutral substance?

a)

sodium bicarbonate

b)

rain water

c)

salt water

d)

pure water

29.

Which of the following is a pure substance?

a)

salt water

b)

dry ice

c)

vinegar

d)

air

30.

Which of the following is an example of a colloid?

a)

salt water

b)

oil and water

c)

paint

d)

dirt and water

31.

Which of the following is an example of a suspension

a)

corn starch and water

b)

oil and water

c)

salt water

d)

milk and water

32.

Lemonade is made up of water, lemon juice, and sugar. What are the solutes?

a)

water

b)

lemon juice

c)

sugar

d)

lemon juice and sugar

33.

Two types of mixtures include:

a)

compounds and elements

b)

compounds and solutions

c)

heterogeneous and homogeneous

d)

inorganic and organic

34.

The atoms in water (H2O) can be separated physically,

a)

True

b)

False

35.

Which of the following are malleable?

a)

metalloids

b)

metals

c)

nonmetals

d)

nonmetals and metalloids

36.

Which of the following is an element?

a)

water

b)

salt

c)

chlorine

d)

sugar

37.

A pH of 3 would be considered

a)

acidic

b)

basic

c)

neutral

38.

A substance taste sour and turns Litmus paper red. What would we conclude about its pH?

a)

acidic

b)

basic

c)

neutral

39.

A substance taste bitter and turns Litmus paper blue. What can we conclude about its pH?

a)

acidic

b)

basic

c)

neutral

40.

A substance does not have a strong taste and blue Litmus paper remains blue/red Litmus paper remains red. What can we conclude about its pH?

a)

acidic

b)

basic

c)

neutral

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