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7F - Acids and Alkalis - Review

Total questions: 50

Worksheet time: 27mins

Name
Class
Date
1.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

2.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

3.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

4.

Match the symbol to the correlating hazard


EXPLOSIVES

a)
b)
c)
d)
5.

This lab student is wearing her googles and an apron. But what is she doing wrong?

a)

Pointing the test tube toward her while heating it.

b)

She actually is doing everything correctly.

c)

Her loose hair is too close to the fire.

d)

Not paying attention

6.

What does this hazard symbol mean?

a)

Harmless to trees and fish

b)

Harmful to non living things

c)

Harmful to living things

d)

Harmless to non living things

7.

What does this hazard symbol mean?

a)

cross

b)

harmful / irritant

c)

sharp

d)

chemical

8.

We should not taste chemical substances as they are

a)

Corrosive

b)

Harmful

c)

Toxic

9.

It is not safe to touch chemical materials as they are

a)

poisonous

b)

Harmful

c)

Corrosive as they burn or damage skin

d)

Oxidizing

10.

Vinegar is an acid

a)

True

b)

False

11.

All alkalis are corrosive

a)

True

b)

False

12.

Red cabbage juice is an indicator

a)

True

b)

False

13.

Bases/alkalis will turn litmus paper __________, while acids will turn litmus paper __________.

a)

blue.....red

b)

red.....blue

c)

pink.........colourless

d)

colourless..........pink

14.
An indicator will ______________ when it is in contact with an acid or base
a)
Bubble
b)
Form a new substance
c)
Change color
d)
Stay the same color
15.
The pH of a strong acid would be:
a)
1-2
b)
5-6
c)
8-9
d)
12-13
16.
The pH of a strong base would be:
a)
1-2
b)
5-6
c)
8-9
d)
13-14
17.
Examine the results (color change) of the pH paper shown in the picture.  What type of substance was tested?
a)
an acid
b)
a base
c)
a neutral substance
d)
none of the above
18.
The pH scale is a range from:
a)

1-7

b)

0-14

c)

1-14

d)

1-20

19.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
20.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
21.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
22.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
23.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
24.
Feels slippery.
a)
Acids
b)
Bases
c)
All
25.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
26.

A chemical reaction in which an acid and a base react to form a salt and water

a)

neutralization

b)

electrolyte

c)

alkalinity

d)

acidity

27.

When an acid and base has been neutralized the pH will be?

a)

1

b)

4

c)

7

d)

10

28.

A bee sting is acidic and can be neutralized by?

a)

water

b)

salt

c)

acid

d)

base

29.

The example of base substance is :-

a)

Milk

b)

Soap

c)

Egg

d)

Wood

30.

Why is toothpaste alkaline?

a)

It can neutralise strong alkaline in

your mouth

b)

It can neutralise acid in

your mouth

c)

It can refresh your teeth

d)

Toothpaste is not alkaline.

31.

WHAT ARE THE PROPERTIES OF ACID ?

a)

Acids are corrosive, sour,

b)

Lemon

c)

Mint

d)

tastes bitter

32.

Excess acids in stomach can be neutralized using ............

a)

antacid

b)

vinegar

c)

slaked lime

d)

hydrochloric acid

33.

These house hold items were made of ____________.

a)

acids

b)

alkalis

34.

Litmus solution is extracted from _____________.

a)

lincent

b)

litchen

c)

lichen

d)

licen

35.

When sulfuric acid react with potassium hydroxide, what will be the product?

a)

sodium chloride and water

b)

potassium sulfate and water

c)

sodium nitrate and water

d)

carbon dioxide and water

36.

An alkali is able to “cancel” out an acid. This process is also known as?

a)

balancing

b)

extraction

c)

overcome

d)

neutralisation

37.

The name of an acid in lemon juice is:

a)

citric acid

b)

ethanoic acid

c)

lemonic acid

d)

sulfuric acid

38.

A solution of pH 3 was mixed with a solution of pH 9. The final pH could be:

a)

2

b)

6

c)

10

d)

12

39.

An acid reacted with an alkali to form a salt and water. Which of these are the reactants?

a)

acid and alkali

b)

acid and salt

c)

alkali and water

d)

salt and water

40.

Nitric acid reacts with sodium hydroxide solution to form a salt and water. Which of the following is the correct word equation?

a)

nitric acid + sodium hydroxide → salt + water

b)

nitric acid + sodium hydroxide → sodium nitrate + water

c)

salt + water → nitric acid + sodium hydroxide

d)

sodium nitrate + water → nitric acid + sodium hydroxide

41.

Indigestion tablets always contain:

a)

acids

b)

antacids

c)

antibiotics

d)

indicators

42.

Which of the following is the example of common acids?

a)
b)
c)
d)
43.

What type of salt do you get when you mix magnesium and sulphuric acid?

a)

Sulphate oxide

b)

Magnesium sulphate

c)

Sulphuric oxide

d)

Magnesium sulphuric

44.

What is the uses of calcium hydroxide in the soil?

a)

used to neutralise the acidity of the soil

b)

used to produce carbon dioxide

c)

used to give a lighter texture to the soil

d)

to make the soil more acidic

45.

In an experiment some pupils found that baking soda had a pH of about 9. Some people claim this substance can be used to treat bee stings. Bee stings must be

a)

acidic

b)

alkaline

c)

neutral

d)

life threatening

46.

Bases that dissolve in water are:

a)

acids

b)

alkalis

c)

salts

d)

none of the above

47.

If you wanted to test a colourless and odourless substance at home, what household item could you use?

a)

Red cabbage water

b)

Bleach

c)

Water

d)

Vinegar

48.

What are the properties of alkalis?

a)

Soapy touch

b)

Sour taste

c)

Bitter taste

d)

A pH of 6 or below

e)

A pH of 8 or above

49.

A solute is...

a)

The substance that is dissolved

b)

A mixture made by dissolving a substance in a liquid

c)

The liquid that does the dissolving

d)

A type of indicator

50.

Your favorite subject at school is......

a)

or science

b)

or science

c)

or science

d)

or science

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