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igcse Chemistry Review

Total questions: 106

Worksheet time: 2hrs 48mins

Name
Class
Date
1.

All matter contains

a)

Atoms

b)

ions

c)

molecules

d)

gases

2.

An object going from a solid to a liquid is

a)

sublimation

b)

deposition

c)

freezing

d)

melting

3.

Which states of matter can change their shape?

a)

liquid

b)

solid

c)

gas

4.

Sublimation is the process of

a)

a gas going to a liquid

b)

a solid going to a gas

c)

a liquid going to a solid

d)

a gas going to a solid

5.

Sublimation is the process of

a)

a gas going to a liquid

b)

a solid going to a gas

c)

a liquid going to a solid

d)

a gas going to a solid

6.

Freezing is the process of a (a)   changing to a solid.

7.

What state of matter is represented in this picture?

a)

solid

b)

liquid

c)

gas

8.

What state of matter is represented in the picture above?

a)

solid

b)

liquid

c)

gas

9.

Which state of matter do the particles slip and slide past each other?

a)

solid

b)

liquid

c)

gas

10.

Moving from the least dense to the most dense, which is the correct order?

a)

liquid, gas, solid

b)

gas, liquid, solid

c)

solid, liquid, gas

11.

Which type(s) of matter have a definite volume?

a)

solid

b)

liquid

c)

gas

12.

Which type(s) of matter take on the shape of the container they are in?

a)

solid

b)

liquid

c)

gas

13.

T or F Condensation is the process of an object moving from the gas phase to the solid phase.

a)

true

b)

false

14.

While an object is melting, what happens to the temperature?

a)

increases

b)

decreases

c)

stays the same

15.

What must be changed during condensation?

a)

temperature

b)

heat energy

16.

While an object is in the liquid state, what must change in order for it to begin to evaporate?

a)

temperature

b)

heat energy

17.

What is happening to an object while it is in the solid phase?

a)

temperature is increasing, kinetic energy is staying the same

b)

temperature is staying the same, kinetic energy is decreasing

c)

temperature and kinetic energy are decreasing

d)

temperature and kinetic energy are increasing

18.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
19.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
20.

Freezing

a)

Solid to gas

b)

Liquid to solid

c)

Gas to solid

21.

Boiling

a)

liquid to gas

b)

gas to solid

c)

gas to liquid

22.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
23.

What is happening when my ice cream changes from a solid to a liquid?

a)

freezing

b)

melting

c)

burning

24.

The state of matter that has no definite size or shape is

a)

Solid

b)

Liquid

c)

Gas

25.

Particles in a ______________________ move quickly and are far apart.

a)

gas

b)

solid

c)

liquid

26.

Particles of a liquid

a)

are tightly packed together and stay in a fixed position.

b)

are free to move around one another but still touch.

27.

Solid to Gas

a)

Deposition

b)

Sublimation

c)

Evaporation

28.

What is condensation?

a)

gas to solid

b)

gas to liquid

c)

liquid to solid

29.

The slower the particles in a substance move,

a)

the colder it is.

b)

the warmer it is.

c)

the more energy it has.

30.

Is this a picture of something hot or cold?

a)

Hot

b)

Cold

31.

Is this a picture of something hot or cold?

a)

Hot

b)

Cold

32.
The temperature of a substance increases as___.
a)
the substance expands
b)
the average kinetic energy of its particles increases
c)
the substance's volume increases
d)
the substance's mass increases
33.

Definite shape and definite volume

a)

Solid

b)

Liquid

c)

Gas

34.

Has a definite volume but not a definite shape

a)

Solid

b)

Liquid

c)

Gas

35.

Liquid to Gas

a)

Condensation

b)

Evaporation

c)

Sublimation

36.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

37.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma!!!

38.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

39.

Which is not true about the liquid state of matter?

a)

The liquid state has a definite volume and a definite shape.

b)

The liquid state takes on the shape of its container.

c)

The liquid state has a definite volume and an indefinite shape.

d)

The particles in a liquid can easily move past each other.

40.

A gas typically consists of:

a)

low energy particles that experience high attractive forces between them.

b)

low energy particles that experience no attractive forces between them.

c)

high energy particles that experience high attractive forces between them.

d)

high energy particles that experience little attractive force between them

41.

Which of the following statements is true regarding the particle structure of liquids? Particles of a liquid are:

a)

very close together, so the liquid cannot easily change its shape.

b)

fast-moving, so they fill the volume of their container.

c)

relatively close together, so they cannot be easily compressed.

d)

very far apart, so they have plenty of room to move around.

42.

The state of matter in which a material has a definite volume and a definite shape is the:

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

43.

Which process could cause a material to change state from gas to liquid?

a)

Adding heat

b)

Adding energy

c)

Removing particles

d)

Removing energy

44.

If I add heat to a solid, how will the motion of the particles be affected?

a)

They will move slower

b)

They will stop moving

c)

They will move faster

d)

They will move to a different container

45.

How can you stop the movement of particles?

a)

Increase the temperature

b)

Decrease the temperature

c)

You can't.

d)

Hold them still with your hands.

46.
Describe the substance between letters D and E. 
a)
Gas
b)
Liquid
c)
Melting
d)
Evaporating
47.
Between which points is the temperature of the substance remaining constant?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
48.

The melting point of the sample is

a)

-60 ºC

b)

-100 ºC

c)

60 ºC

d)

100 ºC

49.

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

a)

20°C

b)

50°C

c)

110°C

d)

170°C

50.

Given the heating curve of a solid being heated at a constant rate, how much total time was required to boil this substance after it reached its melting point?

a)

3 minutes

b)

4 minutes

c)

10 minutes

d)

14 minutes

51.

NaCl(s) was heated up starting at an initial temperature of 0°C. The heating curve is shown in the picture. What is the melting point of this substance?

a)

0°C

b)

801°C

c)

1000°C

d)

1465°C

52.

Given the heating curve of water, what is happening to potential and kinetic energy during segment CD?

a)

the potential energy and kinetic energy both increase

b)

the potential energy increases while the kinetic energy decreases

c)

the potential energy is constant while the kinetic energy increases

d)

the potential energy increases while the kinetic energy is constant

53.
In which region(s) does temperature increase?
a)
Region 1, 3, & 5
b)
Region 2 & 4
c)
Region 1 only
d)
Region 1 & 2
54.

This curve indicates what about the heat energy?

a)

Heat energy is being added or absorbed

b)

Heat energy is being released

55.
In which region(s) does temperature remain constant?
a)
Region 1, 3, & 5
b)
Region 2 & 4
c)
Region 1 only
d)
Region 1 & 2
56.

In which region(s) of the graph would the substance be melting?

a)

No melting occurs on this graph

b)

Region C-E

c)

Region E-G

d)

Region G-I

e)

Region I-K

57.

What is the freezing point of the substance?

a)

0oC

b)

60oC

c)

120oC

d)

180oC

58.

From point A to point F, the sample is going through an __________ process by __________.

a)

exothermic, releasing heat to the surroundings

b)

exothermic, absorbing heat from the surroundings

c)

endothermic, releasing heat to the surroundings

d)

endothermic, absorbing heat from the surroundings

59.
What does “high concentration area” mean?
a)
Spread out
b)
Tightly packed together
c)
Uncrowded
d)
Spacious
60.
Which diagram best shows the end result of diffusion?
a)
F
b)
G
c)
H
d)
J
61.
The picture  is an example of _________________.
a)
isotonic
b)
diffusion
c)
osmosis
d)
active transport
62.
In diffusion, particles move down a _______ ________
a)
Concentrate gradient
b)
Conceited gradient
c)
Concentration gradient 
d)
Concentrated orange juice
63.
Diffusion stops when the concentration is evenly spread out - true or false?
a)
100% definitely true.
b)
Could be false though.
64.
An increase in temperature does what to diffusion?
a)
Speeds it up
b)
Slows it down
c)
Has no effect
d)
I wish i knew. Really I do.
65.

In the picture the red dots represent...

a)

solvent

b)

solute

c)

solution

d)

diffusion

66.
The measure of the average kinetic energy of the particles of a substance is the 
a)
temperature
b)
heat
c)
thermal energy
d)
kinetic energy
67.
Which factor can affect gas pressure?
a)
Temperature 
b)
Volume
c)
The Amount of Gas
d)
All of the answers are correct
68.
The greater the speed of gas particles in a container, the:
a)
greater the pressure
b)
fewer collisions there will be
c)
lower the temperature
d)
lower the pressure
69.

(6A) Which of the following is true of a liquid?

a)

It takes the shape of its container

b)

It is more compressible than a gas.

c)

It expands to take up the volume of the entire container.

d)

The molecules are in a rigid organized structure.

70.

(6A) States of matter are determined by their:

a)

ONLY the amount of energy contained by their molecules

b)

ONLY the arrangement of their molecules

c)

The arrangement AND energy contained by their molecules

d)

Viscosity

71.

(6A) In the image above, which of those phases has the most energy?

a)

Solid

b)

Liquid

c)

Gas

d)

All of the above

72.

(7A) As the temperature decreases along the phase change diagram, what happens to the energy within the molecules?

a)

The energy decreases, the particles slow down

b)

The energy increases, the particles speed up

c)

The energy decreases, the particles speed up

d)

The energy increases, the particles slow down

73.

(7A) Which statement explains the movement of molecules when a liquid becomes a gas?

a)

The particles move closer together into a more defined shape

b)

The particles move farther apart into a less defined shape

c)

The particles move closer together with no defined shape

d)

The particles move farther apart with a more defined shape

74.

(7A) In which segments of the graph do phase changes occur?

a)

ONLY horizontal segment

b)

ONLY diagonal line segments

c)

BOTH horizontal and diagonal line segments

d)

None of the above

75.

(7A) As temperature increases along the phase change diagram, what happens to the arrangement of the molecules?

a)

The particles slow down, move closer together

b)

The particles slow down, move further apart

c)

The particles speed up, move closer together

d)

The particles speed up, move further apart

76.

(7A) What is happening to the molecules in the substance at point B as a solid turns into a liquid?

a)

Melting

b)

Evaporation

c)

Sublimation

d)

Condensation

77.

(7A) Imagine you left a water bottle outside on a cold winter night where the temperature falls below zero degrees. What phase change would occur to the liquid in the bottle?

a)

Melting

b)

Evaporation

c)

Freezing

d)

Condensation

78.

Which of the following states of matter are compressible?

a)

solid

b)

liquid

c)

gas

79.

Gases are easily compressed because of .......................................

a)

the size of its particles.

b)

the space between the particles in a gas.

c)

the mass of the particles.

80.

Factors that affect gas pressure.

a)

The amount of gas.

b)

The volume.

c)

The temperature.

d)

The mass

81.

You can't use kinetic theory to predict and explain how gases will respond to a change of conditions.

a)

True

b)

False

82.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of neutrons 
c)
The transfer of electrons
d)
Sharing electrons
83.
When an atom loses an electron, it becomes a:
a)
positive ion
b)
negative ion
c)
neutral ion
d)
neutral atom
84.
An ionic bond is the attraction between:
a)
oppositely charged ions
b)
similarly charged ions
c)
neutral ions
d)
neutral atoms
85.
Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?
a)
There are 2 bromide ions for every magnesium ion
b)
Bromide has a 2- charge
c)
Bromide has a 2+ charge
d)
There are 2 magnesium ions to every bromide ion
86.
What is the chemical name for the compound with the formula Na₂S?
a)
sodium sulfide
b)
sodium fluoride
c)
magnesium sulfide
d)
lithium oxide
87.
In the chemical formula for an ionic compound, which item is written first?
a)
positive ion
b)
negative ion
c)
subscript
d)
the female
88.
In what form can an ionic compound conduct electricity?
a)
when dissolved in water
b)
as a solid
c)
as a crystal
d)
when warmed slightly
89.
Ions that are made of more than one atom are examples of:
a)
polyatomic atoms
b)
negative ions
c)
positive ions
d)
neutral ions
90.
What is the formula for calcium chloride?
a)
CaCl
b)
CaCl2
c)
Ca2Cl
d)
CaCl3
91.
Name NaBr
a)
Bromide sodide
b)
Sodium bromide
c)
Sodium bromate
d)
Sodium bromite
92.
Name KF
a)
Potassium fluoride
b)
Potassium fluorite
c)
Fluorine potasside 
d)
Potassium fluorate
93.
What is the formula for Sodium Oxide?
a)
NaO
b)
NaO2
c)
Na2O
d)
Na2O2
94.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
95.
What is the formula for copper(II) sulfate?
a)
CuSO4
b)
Cu2SO8
c)
CuS
d)
Cu(SO4)2
96.
What type of elements will form an ionic bond?
a)
Metals + Metals
b)
Nonmetals + Nonmetals
c)
Metals + Nonmetals
d)
None of the above
97.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
98.
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
a)
Mg4N3
b)
MgN2
c)
Mg3N2 
d)
MgN
99.
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.
a)
SO
b)
SO2
c)
SO3
d)
SO4
100.
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
a)
CH2O
b)
C2H4O2
c)
C4H8O4
d)
C6H12O6
101.
Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
a)
 NaPO2
b)
Na2PO3
c)
Na3PO4
d)
NaPO4
102.
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
a)
K2SO4 
b)
K8SO16
c)
K8S4O8 
d)
K8S4O16 
103.
What is the empirical formula if you have 81.82% carbon and 18.18% hydrogen?
a)
C3H8
b)
CH4
c)
C2H2
d)
C4H10
104.
Glycerol has a molar mass of 92.09g/mol. Its percent composition is: 39.12% C, 8.75% H, and 51.12% O. What is the molecular formula for glycerol?
a)
C2H3O2
b)
CH2O
c)
C2H4O2
d)
C3H8O3
105.
Whats the empirical formula of a molecule containing 18.7% of Lithium, 16.3% of Carbon and 65.0% of oxygen?
a)
CO2Li3
b)
Li2CO3
c)
Li3CO2
d)
LiCO5
106.
Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
a)
NaPO2
b)
Na2PO3
c)
Na3PO4
d)
NaPO4

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