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Year 9 Science Sem 1 Exam Revision

Total questions: 150

Worksheet time: 3hrs 23mins

Name
Class
Date
1.

Which of the following is not located in the nucleus of an atom

a)

Protons

b)

Neutrons

c)

Electrons

2.

Which scientist discovered the electrons?

a)

Dalton

b)

Thomson

c)

Atristotle

d)

Bohr

3.

Rutherford and his students did experiments that showed

a)

quark

b)

nucleus

c)

proton

d)

electron

4.

What is a particle with one negative charge called?

a)

electron

b)

proton

c)

quark

d)

neutron

5.

What is a particle with one positive charge called?

a)

proton

b)

electron

c)

neutron

d)

quark

6.

What is the neutral particle found in the nucleus called?

a)

proton

b)

neutron

c)

electron

d)

quark

7.

What is the center of an atom called?

a)

nucleus

b)

electron cloud

c)

proton center

d)

photon center

8.

Which one of the following parts of the atom is the smallest?

a)

electron cloud

b)

electron

c)

nucleus

9.
Matter always has mass.
a)
true
b)
false
10.

All matter is made of

a)

energy

b)

atoms

c)

electrons

d)

compounds

11.
In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.
a)
Atoms
b)
Parts
c)
Molecules
d)
Hydrogen
12.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
13.
Rutherford's gold foil experiment provided evidence that...
a)
negative and positive charges are spread evenly throughout the atom.
b)
alpha particles have a positive charge.
c)
gold is not a dense as previously thought.
d)
there is a dense positively charged nucleus at the center of an atom.
14.

The majority of an atom's mass exists where?

a)

In the nucleus

b)

In the electron cloud

c)

In the space between the nucleus and the electrons

d)

In the neutrons

15.

What type of charge does a proton have?

a)

negative

b)

postive

c)

no charge/neutral

16.

What two sub-atomic particles belong in the nucleus of an atom?

a)

electrons and protons

b)

protons and neutrons

c)

electrons and neutrons

17.

How do you find the atomic number?

a)

by the number of electrons

b)

by the number of protons

c)

by the number of neutrons

18.

The number of neutrons in an atom =

a)

protons - neutrons

b)

mass number - protons

c)

protons - neutrons

d)

mass number - electrons

19.

The number of electrons in an atom is found by the

a)

protons

b)

atomic number

c)

protons and atomic number

d)

none

20.

What is the atomic number of this Carbon atom

a)

6

b)

8

c)

14

d)

12

21.

What is the mass number of this Carbon atom?

a)

8

b)

12

c)

6

d)

15

22.

What is the element symbol?

a)

Argon

b)

Ar

c)

18

d)

39.948

23.

What is the element name?

a)

Argon

b)

Neon

c)

18

d)

Ar

24.

The number 18 represents the

a)

Atomic number

b)

Neutrons

c)

Element Name

d)

Element symbol

25.

The mass number of an atom =

a)

protons + neutrons

b)

protons - neutrons

c)

electrons - neutrons

d)

neutrons + electrons

26.
How are elements on the periodic table arranged by?
a)
in alphabetic order
b)
simular physical & chemical properties
c)
their symbols
d)
Just simular physical properties
27.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
28.
Two elements chemically bonded form
a)
element
b)
compound
c)
mixture
d)
solutions
29.
What element is will have the most similar physical and chemical properties to the element Sulfur (S)?
a)
Carbon (C)
b)
Phosphorous (P)
c)
Oxygen (O)
d)
Neon (Ne
30.
What element is will have the most similar physical and chemical properties to the element Lithium (Li)?
a)
Sodium (Na)
b)
Magnesium (Mg)
c)
Beryllium (Be)
d)
Calcium (Ca)
31.
What element is will have the most similar physical and chemical properties to the element Bromine (Br)?
a)
Fluorine (F)
b)
Carbon (C)
c)
Krypton (Kr)
d)
Selenium (Se)
32.
What element is will have the most similar physical and chemical properties to the element Nitrogen (N)?
a)
Phosphorous (P)
b)
Carbon (C)
c)
Oxygen (O)
d)
Sulfur (S)
33.
Elements that are arranged in __________ have the most similar physical and chemical properties to each other.
a)
periods
b)
groups
34.
All matter is composed of (contains) at least one element on the periodic table
a)
True
b)
False
35.
Periods on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
36.
Groups on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
37.
Sodium (Na) is found in period 
a)
3
b)
2
c)
4
d)
1
38.

What period is Lead (Pb) in?

a)

6

b)

4

c)

Metals

d)

4A

39.

Which group of the periodic table is composed of inert (not reactive) gases with 8 valence electrons?

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

40.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
41.

The atoms on the right of the staircase are called

a)

metalloids

b)

non-metals

c)

metals

d)

noble gases

42.

Able to be drawn into wire is

a)

malleable

b)

insulator

c)

lustre

d)

ductile

43.

The list which contains only metals is .......

a)

aluminium, copper, nitrogen

b)

iron, oxygen, hydrogen

c)

iron, silver, aluminium

d)

iron, sulphur, copper

44.
Describe what luster means
a)
How an object reflects light
b)
How soft an object is
c)
If an object floats
d)
If an object can be dug out of the earth.
45.

Metals create _________ ions, because they give away (lose) electrons.

a)

positive

b)

negative

c)

neutral

46.

The metal which can be cut with knife.

a)

Iron

b)

Silver

c)

Sodium

d)

Magnisium

47.

The chemical symbol for iron

a)

Ir

b)

Fe

c)

I

d)

Fn

48.

All materials show the property of malleability except

a)

iron

b)

graphite

c)

aluminium

d)

silver

49.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
50.
Which of the following is NOT a characteristic of most metals?
a)
Brittle
b)
Good conductor
c)
Ductile
d)
Malleable
51.

All of the following would classify an element as a metal except?

a)

Dull

b)

Luster

c)

Malleable

d)

Ductile

52.
Which elements are found on the left to middle of The Periodic Table? 
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Candles
53.
When an object changes shape when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
54.
If you have a material that can conduct electricity well it is probably a...
a)
Metalloid
b)
Matter
c)
Non-metal
d)
Metal
55.
Unlike non-metals, most metals tend to —
a)
conduct electricity and heat well.
b)
be gases at room temperature.
c)
break easily when hammered.
d)
have less luster and shine.
56.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
57.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
58.

Most metals are solid at room temperature

a)

False

b)

True

59.

Use the table.


An unknown substance is a semi-conductor and is very brittle. This unknown substance could be which of the following elements form the table?

a)

Copper

b)

Mercury

c)

Boron

d)

Hydrogen

60.

Use the Table.


An unknown substance takes the shape of its container and has a mirror like luster. This unknown substance could be which of the following elements from the table?

a)

Mercury

b)

Hydrogen

c)

Boron

d)

Copper

61.

An unknown substance is colorless and has a very low density. This unknown substance could be which of the following elements form the table?

a)

Boron

b)

Mercury

c)

Hydrogen

d)

Copper

62.

An unknown substance is a very good conductor of heat and electricity and can be bent and shaped easily. This unknown substance could be which of the following elements form the table?

a)

Boron

b)

Mercury

c)

Hydrogen

d)

Copper

63.
a)

Metalloids

b)

Plastics

c)

Metals

d)

Nonmetals

64.

a)

metalloid

b)

nonmetal

c)

metal

d)

alloy

65.

a)

metal

b)

alloy

c)

metalloid

d)

nonmetal

66.

Material labeled K contains elements that do not conduct heat or electricity well. The materials that make up K are most likely

a)

nonmetals

b)

liquids

c)

metals

d)

gases

67.

Which characteristics describe an acid?

a)

tastes sour, litmus indicator turns red

b)

tastes bitter, litmus indicator turns blue

c)

tastes sweet and sour, litmus indicator turns red

d)

tastes sour and bitter, litmus indicator turns blue

68.

Which characteristics describe a base?

a)

tastes sour, litmus indicator turns blue

b)

tastes bitter, litmus indicator turns blue

c)

tastes bitter sour, litmus indicator turns blue green

d)

tastes bitter sour, litmus indicator turns green

69.

Which of the following is an acid?

a)

soap

b)

baking soda

c)

orange juice

d)

water

70.

Which of the following is a base?

a)

carbonated water

b)

lime juice

c)

vinegar

d)

dishwashing detergent

71.

What property do all three of these household items have in common?

a)

sometimes conduct electricity

b)

taste soapy

c)

have a pH equal to or above 7

d)

turn litmus paper blue

72.

When Sally tested an unknown solution, her red litmus paper turned blue, but her blue litmus paper remained blue. What does this indicate?

a)

unknown is acidic

b)

unknown is alkaline

c)

unknown is neutral

d)

unknown can be acidic, alkaline or neutral

73.

Which statement is correct?

a)

Blue litmus paper turns red in alkaline solution.

b)

Red litmus paper turns blue in acidic solution.

c)

Blue litmus paper remains blue in acidic or neutral solution.

d)

Red litmus paper remains red in acidic or neutral solution.

74.

The pH scale is a range from

a)

1 to 7

b)

0 to 14

c)

1 to 14

d)

1 to 20

75.

Which statement is true?

a)

the lower the pH, the stronger the acid

b)

the higher the pH, the stronger the acid

c)

the lower the pH, the more neutral the acid

d)

the higher the pH, the weaker the alkali

76.

A very strong acid would have a pH of

a)

1

b)

7

c)

9

d)

14

77.

A weak alkali would have a pH of

a)

8

b)

7

c)

6

d)

14

78.

A solution with a pH of 3.6 would be

a)

acidic

b)

alkaline

c)

neutral

d)

acidic and alkaline

79.

A solution with a pH of 8.6 would be

a)

acidic

b)

alkaline

c)

neutral

d)

acidic and alkaline

80.

If you have a solution that is very acidic with a pH of 3.5, what can you do to raise the pH of the solution?

a)

add an acid

b)

add more water

c)

increase the temperature

d)

add a base

81.

What is the colour of universal indicator in pure water?

a)

red

b)

blue

c)

violet

d)

green

82.

What would happen to the blue and red litmus papers when they are dipped into a sample of acid rain?

a)

Blue litmus paper remains blue and red litmus paper remains red.

b)

Blue litmus paper turns red and red litmus paper turns blue.

c)

Blue litmus paper remains blue and red litmus paper turns blue.

d)

Blue litmus paper turns red and red litmus paper remains red.

83.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

84.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

85.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

86.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

87.

What is the little number after an element in a chemical equation called?

Example: H2

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

88.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

89.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

4

90.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

91.

Is the following equation balanced?

2C2H2 + 5O2 ---> 4CO2 + 2H2O

a)

YES

b)

NO

92.

Is the following equation balanced?

4Fe + 3O2 ---> 2Fe2O3

a)

YES

b)

NO

93.

Is the following equation balanced?

NaHCO3 ---> Na2CO3 + H2O + CO2

a)

YES

b)

NO

94.

Is the following reaction balanced?

2CH3OH + 3O2 ---> 2CO2 + 4H2O

a)

YES

b)

NO

95.

Which of the following equations are correctly balanced?

a)

12CO2 + H2O ---> C6H12O6 + O2

b)

CO2 + H2O ---> 3C6H12O6 + O2

c)

CO2 + 9H2O ---> C6H12O6 + O2

d)

6CO2 + 6H2O ---> C6H12O6 + 6O2

96.

In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?

a)

Mg and O

b)

Mg and MgO

c)

MgO

d)

O and MgO

97.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

98.

Balance this equation:

HgO ---> 2Hg + O2

a)

It is balanced.

b)

2HgO ---> 2Hg + O2

c)

2HgO ---> Hg + O2

d)

HgO ---> Hg + 2O2

99.

Balanced this equation:

Sb2S3 + O2 ---> Sb + SO2

a)

It is balanced.

b)

Sb2S3 + O2 ---> 2Sb + SO2

c)

Sb2S3 + 3O2 ---> 2Sb + 3SO2

d)

3Sb2S3 + 3O2 ---> 2Sb + SO2

100.

How many Oxygen atoms are in 2SO4?

a)

1

b)

2

c)

4

d)

8

101.

Which side of a chemical equation is the reactant side?

a)

Left (before the yields sign)

b)

Right (after the yields sign)

102.

Which side of a chemical equation is the product side?

a)

Left (before the yields sign)

b)

Right (after the yields sign)

103.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

104.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
105.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
106.
What are the smaller numbers that you CANNOT change in a chemical equation? 
a)
Coefficient
b)
Products
c)
Reactants
d)
Subscript
107.
What are the larger numbers that you CAN CHANGE in a chemical equation? 
a)
Coefficient 
b)
Products
c)
Reactants
d)
Subscripts
108.
A neutralisation reaction is a reaction between 
a)
Acid and a Base 
b)
Acid and water 
c)
Base and water 
d)
None of the above 
109.
An acid reacts with metal to produce 
a)
Carbon dioxide 
b)
Hydrogen gas
c)
Hydrogen gas and water 
d)
Salt and hydrogen gas 
110.
A neutralisation reaction produces 
a)
An acid 
b)
A neutral substance 
c)
Only water 
d)
Salt and water 
111.
An acid reacts with a metal carbonate to produce 
a)
Salt, water and hydrogen gas
b)
Salt, water and carbon dioxide
c)
Limewater
d)
Salt and water 
112.
What type of reaction is the following: 
HCl  + Zn --> ZnCl2 + H2
a)
Neutralisation
b)
Acid and a metal 
c)
Acid and a carbonate 
d)
Ionic 
113.
Complete the following reaction:
Sulphuric acid + sodium carbonate
--> 
a)
Carbon dioxide + water 
b)
calcium carbonate + water + carbon dioxide 
c)
Sodium sulphate + water + carbon dioxide 
d)
Sodium chloride + water + carbon dioxide 
114.
Complete the following reaction:
Hydrochloric acid + magnesium hydroxide --> 
a)
Magnesium chloride + water 
b)
Magnesium + water
c)
Magnesium chloride + hydrogen gas 
d)
Magnesium chloride + water + carbon dioxide 
115.
Pure water is _______ on the pH scale.
a)
Acid
b)
Base
c)
Neutral
116.
Metals that react quickly/strongly with water and acids are called?
a)
Reactive
b)
Unreactive
c)
Dangerous
d)
Corrosive
117.
What are the reactants for the reaction of metal with water?
Metal + water ---> metal hydroxide + hydrogen
a)
Metal
b)
Water
c)
Metal and water
d)
Metal hydroxide and hydrogen
118.
What are the products for the reaction of metal with water?
Metal + water ---> metal hydroxide + hydrogen
a)
Metal
b)
Water
c)
Metal and water
d)
Metal hydroxide and water
119.
How can you test to show that when a metal reacts with water, hydrogen gas is produced?
a)
Relights a glowing splint
b)
A lit splint produces a squeaky pop
c)
Puts out a burning splint
d)
Is cold to the touch
120.
What gas is always produced when a metal reacts with water?
a)
Oxygen
b)
Carbon dioxide
c)
Hydrogen
d)
Carbon monoxide
121.
What gas is produced when sodium reacts with water?
a)
Hydrogen
b)
Carbon dioxide
c)
Carbon monoxide
d)
Water vapour
122.
Which salt will be produced if magnesium react with hydrochloric acid?
a)
Magnesium oxide
b)
Magnesium sulfate
c)
Magnesium sulfide
d)
Magnesium chloride
123.
What are the reactants for the reaction of metal with acid?
Metal + acid ---> metal salt + hydrogen
a)
Hydrogen
b)
Metal salt
c)
Metal
d)
Metal and acid
124.
What are the products for the reaction of metal with acid?
Metal + acid ---> metal salt + hydrogen
a)
Metal salt and hydrogen
b)
Metal salt
c)
Metal
d)
Acid
125.
What is essential for a combustion reaction to begin?
a)
Carbon dioxide
b)
Fuel 
c)
Fuel, oxygen and heat
d)
Water and oxygen
126.

What are the products of combustion?

a)

Hydrogen + oxygen

b)

Carbon dioxide + water

c)

Carbon dioxide + hydrogen

d)

Carbon + water

127.

What does incomplete combustion produce that complete combustion doesn't?

a)

Carbon Monoxide

b)

Water

c)

Heat

d)

Carbon Dioxide

128.

What are the types of combustion?

a)

Complete and incomplete

b)

Incomplete and inexact

c)

Impossible and possible

d)

Computer and incomplete

129.

Which of the following chemical reactions involve combustion?

a)

A forest fire

b)

Human digestion

c)

A car using petrol

d)

All of the above

130.
What is corrosion?
a)
The release of oxygen
b)
Breakdown of a metal
131.
Iron rust in the presence of:
a)
Vacuum
b)
Moisture
c)
Oxygen
d)
Moisture and Oxygen
132.
To protect iron against corrosion, the most durable metal plating on it, is:
a)
Zinc plating
b)
Nickel plating
133.
Is this an example of corrosion?
a)
Yes
b)
No
134.

What conditions are required for rusting?

a)

water only

b)

oxygen only

c)

water and oxygen

135.

Which diagram shows the most favourable conditions for rust to appear on the nail?

a)

A

b)

B

c)

C

d)

D

136.

Which organelle is responsible making food (Glucose) using sunlight?

a)

Cell Membrane

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

137.

Select all that are raw materials for Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

138.

Select all that are products of Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

139.

Is Glucose (C6H12O6) a Raw Material (Ingredient) or Product of Photosynthesis?

a)

Product

b)

Raw Material

c)

Neither

140.
Why do plants conduct photosynthesis?
a)
To make light
b)
To make mitochondria
c)
To make glucose
d)
To release carbon dioxide
141.
How does carbon dioxide get into the leaves of a plant?
a)
It's absorbed by the roots
b)
It's made in a chemical reaction in the stem
c)
It enters through the stomata
d)
It goes through the flowers
142.
Which choice correctly shows the gases that enter and exit plants during photosynthesis?
a)
Enter: Oxygen
Exit: Carbon dioxide
b)
Enter: Water vapor
Exit: Glucose
c)
Enter: Carbon dioxide
Exit: Oxygen
d)
Enter: Light
Exit: Water vapor
143.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

light + carbon dioxide + water --> glucose + oxygen

b)

carbon dioxide + sugar + water --> oxygen + light

c)

oxygen + light + water --> carbon dioxide + sugar

d)

carbon dioxide + oxygen + water --> Light+ Sugar

144.

Cellular Respiration occurs in what cell organelle?

a)

chloroplast

b)

cytoplasm

c)

mitochondria

d)

animal

145.

Which organism go through cellular respiration?

a)

animals

b)

plants

c)

both animals and plants

d)

none

146.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
147.

Which of the following is a reactant of cellular respiration?

a)

Glucose

b)

Carbon Dioxide

c)

Water

d)

ATP

148.

Which of the following is a reactant of cellular respiration

a)

Carbon Dioxide

b)

Water

c)

Oxygen

d)

ATP

149.

Which of the following is a product of cellular respiration?

a)

Glucose

b)

Carbon Dioxide

c)

Oxygen

d)

Radiant Energy

150.

Which statement is true regarding cellular respiration?

a)

The reactants of cellular respiration are identical to the reactants of photosynthesis.

b)

The reactants of cellular respiration are obtained from the products of photosynthesis.

c)

The products of cellular respiration are the same as the products of photosynthesis

d)

Cellular respiration only occurs in autotrophs, photosynthesis occurs only in heterotrophs.

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