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Total questions: 165

Worksheet time: 2hrs 9mins

Name
Class
Date
1.
a)

Metal

b)

Nonmetal

c)

Metalloid

2.
a)

Metal

b)

Nonmetal

c)

Metalloid

3.
a)

Metal

b)

Nonmetal

c)

Metalloid

4.
a)

Metal

b)

Nonmetal

c)

Metalloid

5.
a)

Metal

b)

Nonmetal

c)

Metalloid

6.

Which elements are to the right of the zig zag?

a)

metals

b)

nonmetals

c)

metalloids

7.

Sulfur is considered:

a)

malleable

b)

brittle

c)

ductile

d)

a good conductor

8.

ductile means...

a)

can be made into wire

b)

can be bent or hammered

c)

can light up a light bulb

d)

it's shiny

9.

Which elements are to the LEFT of the zigzag?

a)

metals

b)

nonmetals

c)

metalloids

10.
Which of these grouping of elements could have the characteristic of brittle?
a)
Metal
b)
Nonmetal
11.
Some characteristics of a metal are that it is malleable and ductile.
a)
TRUE
b)
FALSE
12.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
13.
Iron is a good conductor, malleable and magnetic. What type of element is Iron? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
14.
One property of a nonmetals is that it is a good conductor of electricity?
a)
true
b)
false
15.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
16.
Non-metals are good conductors of heat and electricity. 
a)
TRUE
b)
FALSE
17.
Is oxygen metal or nonmetal?
a)
metal
b)
nonmetal
18.
Which has a higher density?
a)
metal
b)
nonmetal
19.
All of these properties describe metals EXCEPT...
a)
malleable
b)
conductors
c)
brittle 
d)
luster
20.

Elements that are normally in a gas form, that are dull, brittle, and poor conductors

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Solids

21.

The elements located to the left of the stair-step

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Gases

22.

Usually solid elements that are good conductors, malleable, ductile, and shiny

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Semimetals

23.

The elements located along the stair-step

a)

Metals

b)

Nonmetals

c)

Metalloids

24.

Elements that can be lustrous or dull, malleable or brittle, and conductivity varies

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

25.

Which type of element is located to the right of the stair-step?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Semimetals

26.

The majority of the periodic table is made up of

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

27.

This element is in Group 1, but it is not a metal

a)

Hydrogen

b)

Potassium

c)

Francium

d)

Helium

28.

This is the term used for a metal that is able to be hammered out or pressed

a)

Malleable

b)

Ductile

c)

Conductive

d)

Shiny

29.

What physical properties are used to classify elements as metals, nonmetals, or metalloids?

a)

Color, shape, smell

b)

Reactivity, hardness, texture

c)

Ability to burn, mass, density

d)

Luster, conductivity, malleability

30.

Which of the following correctly lists the 3 main groups of elements from greatest conductivity to least conductivity?

a)

Nonmetal->Metalloid->Metals

b)

Metalloids->Metals->Nonmetals

c)

Metals->Metalloids->Nonmetals

d)

Nonmetals->Metals->Metalloids

31.

The word “luster” refers to which property of matter?

a)

The ability to conduct electrical or thermal energy

b)

Capable of being drawn out into thin wires

c)

The way a surface appears when it reflects light

d)

Suitable for being shaped by beating or rolling

32.

The elements argon, krypton, and xenon are all nonmetals. What property would these elements have in common?

a)

Good conductors of thermal energy

b)

Unreactive

c)

Soft and malleable

33.

This term is used for a metal that is able to be drawn out into a thin wire

a)

Malleable

b)

Ductile

c)

Conductive

d)

Shiny

34.

The most reactive metal

a)

Sodium

b)

Lithium

c)

Magnesium

d)

Francium

35.

The most reactive nonmetal

a)

Oxygen

b)

Sulfur

c)

Chlorine

d)

Fluorine

36.

This element belongs to the metalloid group although some authors classify it as a nonmetal

a)

Polonium

b)

Astatine

c)

Tellurium

d)

Germanium

37.

Which of the following elements belong to metals?

a)

Hydrogen

b)

Tin

c)

Bismuth

d)

Antimony

38.

Which of the following elements belong to nonmetals?

a)

Arsenic

b)

Iodine

c)

Hydrogen

d)

Potassium

39.

Which of the following elements belong to metalloids?

a)

Germanium

b)

Aluminum

c)

Tin

d)

Silicon

40.

What is the pH of distilled water?

a)

pH 12

b)

pH 3

c)

pH 8

d)

pH 7

41.

What colour does red litmus paper turn when added to an alkali?

a)

Blue

b)

Red

c)

Green

d)

Colourless

42.

What colour does blue litmus paper turn when added to an acid?

a)

Blue

b)

Red

c)

Green

d)

Colourless

43.

What other laboratory substance can you use to test if colourless substance is an acid or an alkali?

a)

Catalyst

b)

Salt

c)

Universal Indicator

d)

Water

44.

What happens to the pH of an acid during neutralisation?

a)

It stays the same

b)

It moves toward pH 1

c)

It moves towards pH 7

d)

It moves towards pH 14

45.

A wasp sting is alkali. Which substance would neutralise the sting?

a)

Vinegar

b)

Bleach

c)

Baking soda

d)

Distilled water

46.

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

47.

Which substance is an acid?

a)

Water

b)

Bleach

c)

Orange juice

d)

Washing powder

48.

Which pH levels indicated a strong acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

49.

Which pH level indicates a weak alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

50.

Which pH level indicates a weak acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

51.

Which pH level indicates a strong alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

52.

Acids taste...

a)

Sweet

b)

Salty

c)

Sour

d)

Smooth

53.

Alkalis feel...

a)

Rough

b)

Granulated

c)

Soapy

d)

Smooth

54.

Strong acids and alkalis are...

a)

Sour

b)

Sweet

c)

Corrosive/Caustic

d)

Burn litmus paper

55.

What does this hazard symbol mean?

a)

toxic

b)

flammable

c)

corrosive

d)

explosive

56.

What pH range would you get for an acid?

a)

0-6

b)

7

c)

7-14

d)

2-10

57.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
58.
a)

PH scale

b)

pH ruler

c)

pH scale

d)

pH statistical tables

59.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
60.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
61.

Acid + Alkali --> Salt + Water

a)

neutralization reaction

b)

synthesis

c)

decomposition

d)

single displacement

62.
A neutralization reaction will always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
63.

Something that can be used to identify acid/alkali:

a)

Indicator

b)

Oxidator

c)

Reductor

d)

Terminator

64.

Which of the following acids do we have in our stomach?

a)

Ethanoic acid

b)

Hydrochloric acid

c)

Nitric acid

d)

Sulphuric acid

65.

The image shows a PH scale. Which option indicates strong alkali?

a)

a

b)

b

c)

c

d)

d

66.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-20

67.

Alkalis feel...

a)

Rough

b)

Soapy

c)

Granulated

d)

Smooth

68.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

69.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

70.
What colour is universal indicator in a strong alkali?
a)
Green
b)
Orange
c)
Purple
d)
Red
71.

What can turmeric and red cabbage be used for?

a)

To look pretty

b)

As an indicator

c)

As a test for an acid

d)

As a test for acid rain

72.

An alkali can neutralize an acid

a)

False

b)

True

73.

Complete the word equation below:

Acid + alkali --> ............... + water

a)

water

b)

salt

c)

gold

d)

metal

74.

What type of reaction occurs when you react an acid with an alkali?

a)

combustion

b)

decomposition

c)

no reaction

d)

neutralisation

75.

Toothpaste contain .................. that neutralize acid formed by bacteria.

a)

alkali

b)

acid

c)

antacid

d)

slaked lime

76.

Bee sting contain ............................ and can be neutralize using bicarbonate soda.

a)

alkali

b)

acid

c)

vinegar

d)

soda

77.

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

a)

antacid

b)

vinegar

c)

slaked lime

d)

hydrochloric acid

78.

..................................... is used to treat water to reduce the acidity of water.

a)

alkali

b)

slaked lime

c)

antacid

d)

vinegar

79.

We should not taste chemical substances as they are

a)

Corrosive

b)

Harmful

c)

Toxic

80.

Which indicator can test for both acids and alkalis and provides a pH number of the substance being tested?

a)

Blue litmus paper

b)

universal indicator

c)

red litmus paper

81.

Is blue litmus paper used to test for acids or alkalis?

a)

acids

b)

alkali's

c)

both

82.

Is red litmus paper used to test for acids or alkalis?

a)

acids

b)

alkali's

c)

both

83.

What pH number does a neutral substance have?

a)

7

b)

3

c)

9

d)

14

84.

True or false:


A substance that is a weak acid would have a pH of 5-6.

a)

true

b)

false

85.

True or false:


A substance that is a strong alkali would have a pH of 8-9.

a)

true

b)

false

86.

Complete:

ACID + BASE --> ___ + ___

a)

metal salt + water

b)

metal salt + base

c)

metal salt + alkali

87.

What term is used to describe an acid cancelling out an alkali?

a)

neutralisation

b)

mixing

c)

dilution

d)

concentrating

88.

Complete:


ACID + METAL --> ___ + ___

a)

metal salt + hydrogen

b)

metal salt + carbon dioxide

c)

metal salt + oxygen

89.

True or false:


The test for hydrogen gas is that it relights a glowing splint.

a)

true

b)

false

90.

True or false:


Sulphur dioxide is a gas that can dissolve in water droplets in the atmosphere to form acid rain.

a)

true

b)

false

91.

True or false:


The name of the acid found in the stomach is hydrochloric acid.

a)

true

b)

false

92.

What number pH would a very strong acid have?

a)

1

b)

14

c)

7

d)

9

93.

What number pH would a very strong alkali have?

a)

1

b)

14

c)

9

d)

4

94.

True or false:


Ethanoic acid [i.e. vinegar] and citric acid [found in oranges and limes, for example] are highly corrosive.

a)

true

b)

false

95.

True or false:


HYDROCHLORIC ACID + MAGNESIUM --> HYDROGEN + MAGNESIUM CHLORIDE

a)

true

b)

false

96.

True or false:


The less reactive the metal is, the faster a chemical reaction will be.

a)

true

b)

false

97.

True or false:


Less reactive metals produce hydrogen faster than more reactive metals.

a)

true

b)

false

98.

What happens to the pH of an acid during neutralisation?

a)

It stays the same

b)

It moves toward pH 1

c)

It moves towards pH 7

d)

It moves towards pH 14

99.
a)

PH scale

b)

pH ruler

c)

pH scale

d)

pH statistical tables

100.

What does this hazard symbol mean?

a)

toxic

b)

flammable

c)

corrosive

d)

explosive

101.

What does the pH scale measure?

4 lines
102.

What is the pH of a neutral solution?

a)

around 1 - 3

b)

around 5 - 7

c)

7

d)

9

103.

A liquid has a pH of 1. What type of liquid is it?

a)

weak acids

b)

strong acids

c)

weak alkaline

d)

strong alkaline

104.

Strong alkaline will have colour of universal indicator as (a)  

105.

what colour does Universal Indicator go in a liquid with pH of 4?

a)

red

b)

yellow

c)

green

d)

blue

106.

Tick all the correct statements

a)

blue litmus paper will turn red in sodium hydroxide

b)

blue litmus paper will not change colour in sodium hydroxide

c)

red litmus paper will turn blue in sodium hydroxide

d)

red litmus paper will not change colour in sodium hydroxide

107.

Litmus dye will change colour into purple in (a)   solution

108.

Tick all the ingredients that can be made into common indicator.

a)

red cabbage

b)

apple

c)

blackcurrant

d)

beetroot

109.

Arrange these solutions in order, with most alkaline first.

pH numbers: 2 8 6 3 12 7

(a)  

110.

Tick all the substances that are more acidic than baking soda.

a)

coffee

b)

ammonia solution

c)

water

d)

battery

111.

Drain cleaner is stronger acids compare to milk

a)

true

b)

false

112.

What is the advantage of using Universal Indicator compare to common indicator?

4 lines
113.

Tick all the substances that are more alkaline than the milk

a)

tomato

b)

blood

c)

vinegar

d)

ammonia solution

114.

Which of the following is true of an acid?

a)

It has a pH value of 7.

b)

It turns red litmus paper blue.

c)

It turns blue litmus paper red.

d)

It has a pH value of more than 7.

115.

Litmus paper can be used to determine the pH value of a solution.

a)

True

b)

False

116.

All acids have a pH higher than 7.

a)

True

b)

False

117.

Distilled water has a pH of 7.

a)

True

b)

False

118.

When a Universal Indicator is added to sulphuric acid, the solution turns red.

a)

True

b)

False

119.

When a Universal Indicator is added to a solution of potassium hydroxide, the solution turns blue.

a)

True

b)

False

120.

When acids and alkalis react, salts of neutral pH are formed.

a)

True

b)

False

121.

Toothpaste can neutralise the acids produced by bacteria feeding on the food stuck on our teeth.

a)

True

b)

False

122.

Study the table provided.


Which substance(s) will turn blue litmus paper red?

a)

S

b)

S and T

c)

S and U

d)

T and U

123.

Study the table provided.


What gas is produced when magnesium is added to substance S?

a)

Helium

b)

Oxygen

c)

Hydrogen

d)

Carbon Dioxide

124.

What will happen when Sodium Hydroxide solution is added gradually to a conical flask of dilute nitric acid containing Universal Indicator?

a)

The pH increases.

b)

The pH decreases.

c)

The colour of the indicator will not change.

d)

The colour of the indicator changes from blue to red.

125.

Which of the following word equations does not show neutralisation between an acid and alkali?

a)

sulfuric acid + zinc --> zinc sulfate + hydrogen

b)

nitric acid + sodium hydroxide --> sodium nitrate + water

c)

sulfuric acid + sodium hydroxide --> sodium sulfate + water

d)

hydrochloric acid + calcium hydroxide --> calcium chloride + water

126.

Both acids and alkalis are (a)   .

127.

When solutions P and Q are mixed, neutralisations occurs and a solution with a pH of 7 is obtained. What could the pH values of P and Q be?

a)

A

b)

B

c)

C

d)

D

128.

What would be the best way to determine if a substance is an acid or a base?

a)

Drop some on your skin.

b)

Taste it.

c)

Use an indicator such as litmus or universal indicator.

d)

Add it to some metal and test any gas that evolves.

129.

If a student tested a solution with blue litmus paper and it remained blue, what does this mean?

a)

The litmus paper is old, they should open a new pack and try again.

b)

The solution is neutral.

c)

The solution is an acid.

d)

The solution is a base.

e)

Need to test with red litmus for confirm that the solution is a base

130.

Which of the following statements about litmus and universal indicator are true?

a)

Universal indicator can determine the strength of an acid or base, whereas litmus cannot.

b)

Litmus gives qualitative data while universal indicator provides quantitative data.

c)

Both litmus and universal indicator test solutions not solids.

d)

All these statements are correct.

131.

What color would you expect an acidic solution to turn if universal indicator was added to it?

a)

Yellow

b)

Dark Green

c)

Blue

d)

Violet

132.

What color would you expect basic solution to turn if universal indicator was added to it?

a)

Green

b)

Violet

c)

Red

d)

Yellow

133.

Which solution would turn litmus red?

a)

Potassium hydroxide

b)

Sodium chloride

c)

HNO3

d)

Ammonia

134.

Which solution would turn litmus blue?

a)

HCl

b)

Citric fruits

c)

H2SO3

d)

NH3

135.

What is the nature of the solution present in the beaker?

a)

Alkali

b)

Acidic

c)

Neutral

d)

Water

136.

Which of the set of pH paper depicts that the dipped solution is highly acidic?

(compare with the pH scale and find out)

a)
b)
c)
137.

Which pH could belong to a strong acid?

a)

14

b)

8

c)

5

d)

1

138.

Which pH could belong to a strong alkali?

a)

14

b)

8

c)

5

d)

1

139.

Which pH could belong to a weak acid?

a)

14

b)

8

c)

5

d)

1

140.

Which pH could belong to a weak alkali?

a)

14

b)

8

c)

5

d)

1

141.

Which pH is neutral?

a)

14

b)

7

c)

4

d)

2

142.

Which ion do all acids contain?

a)

Cl-

b)

OH-

c)

H+

d)

Na+

143.

Which ion do all alkalis contain?

a)

Cl-

b)

OH-

c)

H+

d)

Na+

144.

What is an indicator in Chemistry?

a)

Chemical dyes that can change colour according to pH

b)

A small light bulb on a car

c)

A chemical involved in a chemical reaction

d)

A substance used to neutralise an acid

145.

How can you measure the pH of a substance?

a)

Use a pH probe

b)

Use universal indicator

c)

Use litmus paper

d)

Use phenolphthalein

146.

What are the two products of a neutralisation reaction?

a)

Acid

b)

Alkali

c)

Salt

d)

Water

147.

How many types of Indicators are their

a)

1

b)

2

c)

3

d)

4

148.

Blue litmus turning red in an _______________

a)

Acids

b)

Bases

c)

Salts

d)

None of these

149.

Give two examples of Natural lndicators

4 lines
150.

Name the 2 type of Indicators

a)

Universal indicators

b)

National Indicators

c)

Both A and B

151.

Ph __________ is a strongly acidics

a)

1

b)

5

c)

3

d)

4

152.

Name the reaction when an acid is mixed with base.

(a)  

153.

Products of a neutralisation reaction are always.

a)

an acid and a base

b)

an acid and a salt

c)

a salt and water

d)

A salt and a base

154.

Acid + Base → ……………… + Water

(a)  

155.

Lemon water is basic in nature

a)

True

b)

False

156.

which acid is called the king of the chemicals

a)

Boric Acid

b)

Oxalic Acid

c)

Nitric Acid

d)

Sulfuric acid

157.

Acids taste

a)

fishy

b)

salty

c)

sour

d)

sweet

158.

The name of acid in lemon juice is

a)

ethanoic

b)

lemonic acid

c)

citric acid

d)

sulfuric acid

159.

Which one of these is an acid?

a)

salt water

b)

oven cleaner

c)

pure water

d)

vinegar

160.

The colour of universal indicator in a substance that is very acidic is:

a)

green

b)

orange

c)

purple

d)

red

161.

Universal indicator is added to a solution. The solution turns purple. The solution contains

a)

citric acid

b)

hydrochloric acid

c)

sodium hydroxide solution

d)

only water

162.

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

a)

2

b)

6

c)

10

d)

12

163.

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 + water

b)

nitric acid + sodium hydroxide --> sodium nitrate + water

c)

salt + water --> nitric acid + sodium hydroxide

d)

sodium nitrate + water --> nitric acid + sodium hydroxide

164.

Indigestion tablets always contain

a)

acids

b)

antacids

c)

antibiotics

d)

indicators

165.

The salt formed when sulfuric acid reacts with iron oxide (rust) is

a)

iron chloride

b)

iron hydroxide

c)

iron nitrate

d)

iron sulfate

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Bones,Muscles and Digestive Systems 2022

quiz

Worksheet

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7th - 8th Grade