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Chemistry knowledge KS3-KS4

Total questions: 114

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

Gas to liquid is

a)

melting

b)

freezing

c)

evaporation

d)

condensation

2.

Solid to gas is

a)

melting

b)

freezing

c)

evaporation

d)

sublimation

3.

Liquid to solid is

a)

evaporation

b)

freezing

c)

sublimation

d)

condensation

4.

Solid to liquid is

a)

evaporation

b)

condensation

c)

melting

d)

sublimation

5.

Liquid to gas is

a)

condensation

b)

freezing

c)

evaporation

d)

melting

6.

How close together particles are is called

a)

mass

b)

weight

c)

density

d)

volume

7.

How much space particles take up is called

a)

mass

b)

weight

c)

density

d)

volume

8.

In which state of matter can the particles only vibrate?

a)

solid

b)

liquid

c)

gas

9.

Which state of matter takes the shape of the bottom of the container?

a)

solid

b)

liquid

c)

gas

10.

Which state of matter takes the shape of the whole container?

a)

solid

b)

liquid

c)

gas

11.

As temperature increases particles

a)

move faster

b)

move slower

c)

get smaller

d)

get bigger

12.
Define a liquid.
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
13.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position.
b)
have no viscosity.
c)
decrease in volume with increasing temperature.
d)
are free to move around one another but still touch.
14.

Elements

a)

are made of two or more types of atoms chemically bonded together

b)

are made of one type of atom

c)

are made of two or more types of molecules combined in the same space

d)

are always individual atoms

15.

Compounds

a)

are made of two or more types of atoms chemically bonded together

b)

are made of one type of atom

c)

are found on the periodic table

d)

can be separated into their individual parts through physical means

16.

Mixtures

a)

are made of two different types of atoms chemically bonded together

b)

Are only liquids

c)

Cannot be separated

d)

Can be separated using physical properties

17.

Which is the smallest particle of an element that has the same properties as that element?

a)

atom

b)

molecule

c)

electron

d)

neutron

18.

Which of the following are examples of ELEMENTS?

a)

Oxygen

b)

Water

c)

F2

d)

Lemonade

e)

Sulfur Dioxide (SO2)

19.

Which of the following are examples of Compounds?

a)

Salt

b)

Salt Water

c)

N2 + O2

d)

C6H12O6

e)

Co

20.

Which substance can have ratios of atoms that change

a)

element

b)

mixture

c)

compound

d)

molecule

21.

The subscript 2 in H2O tells us

a)

There are 2 atoms of oxygen in one molecule of water

b)

There are 2 atoms of hydrogen in one molecule of water

c)

There are 2 molecules of water present

d)

The 2 tells me nothing, you wizard!

22.

Is salt (NaCI) a compound or an element?

a)

Compound

b)

element

23.
Carbon Dioxide is a ______ 
a)
compound 
b)
element 
c)
mixtures 
d)
Battle of Bunker Hill 
24.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
25.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
26.
What does the diagram show?
a)
A mixture of two elements
b)
A pure compound
c)
A mixture of two compounds
d)
A mixture of a compound & element
27.
What does the diagram show?
a)
A mixture of two elements
b)
A pure compound
c)
A mixture of two compounds
d)
A mixture of a compound & element
28.
Which description below is a true statement about the diagram?
a)
The diagram can be classified as an element and a molecule
b)
The diagram can be classified as a compound
c)
The diagram can be classified as a mixture of two compounds
d)
The diagram can be classified as a mixture of two elements
29.
Classify Sulfuric Acid (H2SO4) as an element or compound.
a)
Element
b)
Compound
30.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

31.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
32.
Measure mainly of the nuclear particles: protons + neutrons
a)
Subatomic Particles
b)
Atomic Number
c)
Atomic Mass
d)
Gluons
33.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
34.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
35.
Arrangement of elements organized by atomic number
a)
Electron Cloud 
b)
Periodic Table 
c)
Electron Configuration
d)
None of these
36.

The smallest particle of an element.

a)

Element

b)

Molecule

c)

Atom

37.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

38.

How many protons and electrons does this element have?

a)

35

b)

18

c)

17

d)

52

39.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

40.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

41.

How many neutrons does calcium have?

a)

20

b)

40

c)

60

d)

0

42.

Where are electrons found?

a)

In neutrons

b)

In shells

c)

In the nucleus

d)

In protons

43.

What particles have a charge of -1 and a very small mass?

a)

protons

b)

neutrons

c)

electrons

d)

shells

44.

Elements in group 7 have how many electrons in their outer shell?

a)

1

b)

3

c)

5

d)

7

45.

The period (row) number determines the

a)

number of electrons

b)

number of neutrons

c)

number of shells

d)

number of protons in the nucleus

46.

Why are atoms neutrally charged?

a)

Balanced numbers of protons and neutrons

b)

Equal numbers of electrons and protons

c)

The neutrons have no charge

d)

Atoms always have a positive charge

47.

What element has the symbol N?

a)

Neon

b)

Nitrogen

c)

Nickel

d)

Sodium

48.

What element has the symbol Ca?

a)

Cobalt

b)

Carbon

c)

Copper

d)

Calcium

49.

Isotopes are atoms that have ...

a)

same number of protons but different number of electrons

b)

same number of neutrons but different number of protons

c)

same number of protons but different number of neutrons

d)

same number of electrons but different number of protons

50.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
51.
How many carbon atom/s are present in the compounds CaCO3?
a)
1
b)
2
c)
3
d)
4
52.

__ Al + __ FeO → Al2O2 + __ Fe

a)

1, 1, 2

b)

2,1,2

c)

2, 2, 2

d)

2,4,2

53.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
54.

The Law of Conservation of Mass says that matter can neither be __________ or __________.

a)

created; destroyed

b)

recycled; renewed

c)

subtracted; added

d)

joined; separated

55.

What is the correct order for obtaining salt from a mixture of sand and salt?

a)

Dissolving in water - filtration - evaporation

b)

Evaporation - filtration - dissolving in water

c)

Filtration - dissolving in water - evaporation

56.

Which method is usually used to separate coloured substances from each other?

a)

Simple distillation

b)

Evaporation

c)

Chromatography

57.

How could you separate iron filings from a mixture of iron and sulfur?

a)

Using a magnet

b)

By adding water and filtering

c)

By distillation

58.

In filtration, what name is used to describe the solid left in the filter paper?

a)

Filtrate

b)

Residue

c)

Distillate

59.

Crude oil can be separated into several liquids that have different boiling points. What is the name of this process?

a)

Simple distillation

b)

Chromatography

c)

Fractional distillation

60.

Sn

a)

tin

b)

sulfur

c)

iron

d)

sodium

61.

Zinc

a)

Z

b)

Zi

c)

ZN

d)

Zn

62.

Sulfur

a)

Sf

b)

Su

c)

Sr

d)

S

63.

Neon

a)

N

b)

No

c)

Ne

d)

Nn

64.

Copper

a)

CU

b)

Cp

c)

Cu

d)

Cr

65.

Helium

a)

He

b)

Hl

c)

HE

d)

Hm

66.

Gold

a)

Go

b)

Gl

c)

AU

d)

Au

67.

Pb

a)

Gold

b)

Lead

c)

peanut butter

d)

Paribium

68.

Iron

a)

Ir

b)

In

c)

Fe

d)

FE

69.

Nickel

a)

Ni

b)

N

c)

Nl

d)

Nc

70.

Mercury

a)

Me

b)

Hg

c)

HG

d)

ME

71.

Potassium

a)

P

b)

K

c)

Pt

d)

k

72.

Aluminum

a)

A

b)

Al

c)

Am

d)

Au

73.

When burning a fire, if I remove Oxygen, then the fire will...

a)

no longer burn

b)

keep burning

c)

EXPLODE

74.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
75.

What does the "thermal" in thermal decomposition mean?

a)

sulfur

b)

catalyst

c)

heat

d)

oven

76.

copper(II)carbonate → ___________ + carbon dioxide

a)

copper(I) oxide

b)

copper(II) oxide

c)

copper oxide

d)

copper(III) oxide

77.

What happens when CO2 is bubbled through limewater

a)

It changes from pink to blue

b)

It goes pop

c)

It goes cloudy

d)

It gets hot

78.

The reaction between an acid and an alkali

produces salt and water. This reaction is called

a)

acidication

b)

neutralisation

c)

alkalisation

79.

What colour is Universal indicator when the solution is neutral?

a)

Red

b)

Green

c)

Blue

d)

Purple

80.
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
81.

Complete the word equation below:

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

a)

water

b)

salt

c)

gold

d)

metal

82.

Which element has been oxidised?

iron oxide + lithium → iron + lithium oxide

a)

iron

b)

lithium

c)

oxide

d)

lithium oxide

83.

What are the Group 1 elements also known as?

a)

Non-metals

b)

Alkaline

c)

Alkali metals

84.

Where are Group 1 elements on the Periodic Table?

a)

Far right

b)

Far left

c)

In the middle

d)

Top, horizontal row

85.

Group 1 elements form alkaline solutions that will turn universal indicator what colour?

a)

orange

b)

blue

c)

green

d)

purple

e)

red

86.

Group 1 elements consist of: lithium, potassium, caesium, rubidium, and francium. Which element have we missed out?

a)

hydrogen

b)

sulfur

c)

manganese

d)

sodium

87.
Which of the following is the most reactive in water?
a)
Lithium
b)
Sodium
c)
Potassium
88.
What is another name for the elements in group 7?
a)
The Halogens
b)
The Noble gases
c)
The Oxides
d)
The Alkali Metals
89.

What group on the periodic table are the Halogens found?

a)

7

b)

5

c)

1

d)

P

90.

Halogens are metals?

a)

True

b)

False

91.

Halogens are good conductors of heat and electricity.

a)

True

b)

False

92.

Which Halogen is the most reactive?

a)

Bromine

b)

Fluorine

c)

Iodine

d)

Chlorine

93.
Which of these is not a noble gas?
a)
Helium
b)
Argon
c)
Nitrogen
d)
Krypton
94.

6.15: Which of these is not a property of noble gases?

a)

Colourless

b)

Odourless

c)

Flammable

d)

Gas at room temperature

95.
Name the group that contains inert (nonreactive) elements.
a)
noble gases
b)
halogens
c)
alkali metals
d)
alkaline earth metals
96.
________ are the COLUMNS on the periodic table and are organized by similar properties.
a)
Classifications
b)
Groups
c)
Periods
d)
Elements
97.
The blue atoms are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
98.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
99.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
100.

Elements in a .................. have similar chemical properties.

a)

period

b)

group

c)

row

101.

Who arranged the known elements into horizontal rows of increasing atomic mass leaving gaps for as yet undiscovered elements?

a)

Mendeleev

b)

Meyer

c)

Newlands

d)

Moseley

102.
The periodic table is organized by the number of ______ in each element's nucleus
a)
neutrons
b)
protons
c)
electrons
d)
atoms
103.
Brittle
a)
Metal
b)
Nonmetal
104.
Which table below correctly lists the properties of metals and nonmetals? *
a)
A
b)
B
c)
C
d)
D
105.
A student tested the conductivity of four elements using an incomplete electrical circuit. When the element is placed in the circuit, the bulb lights up brightly, lights up dimly, or does not light up at all based on the element’s ability to conduct electricity. The table below shows the results of her investigation. Based on the results of the conductivity test, which element is classified as a metal? 
a)
Hydrogen
b)
Arsenic
c)
Krypton
d)
Copper
106.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
107.

Able to be beaten or hammered into shapes

a)

luster

b)

malleable

c)

brittle

d)

insulator

108.

Allows heat or electricity to go through

a)

insulator

b)

conductor

c)

luster

d)

ductile

109.

Which properties of metal makes it a good choice to make a cooking pot out of? Choose TWO

a)

it has luster - it is shiny

b)

it is a good conductor of heat

c)

it is ductile - able to be made into a wire

d)

it has a high melting point

110.
How are metal oxides formed?
a)
When metals react with oxide.
b)
When metals react with water.
c)
When metals react with air.
d)
When metals react with oxygen.
111.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
112.

Heat and ____________ can change sedimentary rock into metamorphic rock.

a)

Pressure

b)

Melting

c)

Coolig

113.

How do animals get carbon?

a)

Photosynthesis

b)

They absorb it from the atmosphere

c)

The sun

d)

They eat other plants and animals

114.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death

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