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National 5 Chemistry - Revision

Total questions: 73

Worksheet time: 57mins

Name
Class
Date
1.

What are the three essential elements that plants require?

a)

nitrogen phosphate potassium

b)

nitrogen sulphur potassium

c)

nitrogen potassium phosphorous

d)

nitrogen potassium polonium

2.

what is the catalyst used in the Haber process?

a)

iron

b)

platinum

c)

silver

d)

gold

3.

What is produced in the Ostwald process?

a)

ammonia

b)

nitrogen

c)

nitrate

d)

nitric acid

4.

ammonia reacts with acids to produce ammonium salts

a)

true

b)

false

5.

ammonia is a very acidic gas

a)

true

b)

false

6.

What type of bonding is in ammonia?

a)

metallic

b)

covalent molecular

c)

covalent network

d)

ionic

7.

Fertilisers are salts. what type of reaction produces fertilisers?

a)

addition

b)

precipitation

c)

neutralisation

d)

condensation

8.

What type of elements form Covalent Bonds?

a)

Metals only

b)

Non-metals only

c)

Metals and non-metals

9.

Diamond is an example of a

a)

covalent molecule

b)

covalent network

c)

metallic lattice

d)

ionic lattice

10.

What type of elements form ionic bonds?

a)

metals

b)

non-metals

c)

non-metals and metals

11.

Ionic bonds are the attraction between

a)

positive nuclei and shared electrons

b)

positive metal ions and delocalised electrons

c)

positive and negative ions

12.

Metals form (blank) ions.

a)

positive

b)

Negative

13.

Ionic substances have which type of structure?

a)

covalent molecular

b)

covalent network

c)

ionic lattice

d)

metallic lattice

14.

A temperature increase causes the particles to ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

15.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of particle collisions

16.

What can be said about the green line?

a)

it is a faster rate of reaction

b)

It produces same volume of product as red line

c)

Half the volume of reactants has been used

17.

Which would not speed up a chemical reaction?

a)

Using a large beaker

b)

Increasing the concentration

c)

Decreasing particle size

d)

adding a catalyst

18.

Increasing the temperature gives particles more __________.

a)

Time

b)

Energy

c)

Space

d)

Frequency

19.
What is the pH of an extremely strong acid?
a)
pH 0
b)
pH 7
c)
pH 13
d)
pH 2
20.
Which ion determines a base?
a)
H+
b)
OH-
c)
OH+
d)
CO32-
21.

Solutions that have more H+ ions than OH- ions are

a)

acids

b)

bases

c)

enzymes

d)

neutral

22.
Which has a pH below 7?
a)
Acid
b)
Base
23.

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

24.

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

25.
The subatomic particle with a neutral charge is:
a)
protons
b)
electrons
c)
neutrons
d)
cloud
26.
Which two subatomic particles are found in the NUCLEUS of at atom?
a)
protons & nuetrons
b)
protons & electrons
c)
neutrons & electrons
d)
electrons & protons
27.
What gives an atom mass?
a)
Protons & electrons in the nucleus
b)
electrons in the cloud
c)
protons & neutrons in the nucleus
d)
Protons & electrons in the cloud
28.
If an atom has 24 protons and 24 electrons, what is the atomic number of this element?
a)
24
b)
48
c)
0
d)
42
29.
The number of protons is equal to 
a)
the atomic number
b)
the number of neutrons
c)
the energy levels
d)
the periodic table groups
30.
What does the H stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
31.
a)

A

b)

B

c)

C

d)

D

32.
What is a homologous series?
a)
A group of hydrocarbons with the same chemical formula and similar chemical properties
b)
A group of hydrocarbons with the same general formula and similar chemical properties
c)
A group of hydrocarbons with the same chemical formula and the same chemical properties
d)
A group of hydrocarbons with the same general formula and similar chemical properties
33.
What is produced when hydrocarbons burn is a plentiful supply of oxygen?
a)
carbon monoxide
b)
carbon dioxide
c)
carbon monoxide and water
d)
carbon dioxide and water
34.
What is meant by the term hydrocarbon?
a)
Compounds containing carbon and hydrogen.
b)
Compounds containing carbon, hydrogen and oxygen.
c)
Compounds containing carbon and hydrogen only.
35.
What is the correct general formula for the alkenes?
a)
CnH2n+2
b)
CnH2n
c)
CnH2n-2
d)
CnHn
36.
What is meant by the term isomer?
a)
Compounds which have the same general formula but a different structural formula
b)
Compounds which have the same general formula
c)
Compounds which have the same chemical formula
d)
Compounds which have the same chemical formula but a different structural formula
37.
How many carbons atoms are there in a molecule of butane?
a)
3
b)
4
c)
5
d)
6
38.
What is the correct general formula for the cycloalkanes?
a)
CnH2n+2
b)
CnH2n
c)
CnH2n-2
d)
CnHn
39.
What type of reaction do alkenes undergo when they react with bromine water?
a)
Addition
b)
Combustion
c)
Halogenation
d)
Dehydration
40.
Cyclopentane can quickly decolourise bromine water.
a)
true
b)
false
41.
Why are alcohols good fuels?
a)
They burn with a clean flame
b)
The explode
c)
They don't produce carbon dioxide
d)
They release less energy
42.
Which of the following is made when sodium reacts with propanoic acid?
a)
sodium methanoate
b)
sodium ethanoate
c)
sodium propanoate
d)
potassium propanoate
43.
In energy calculations 'm' stands for
a)
mass
b)
mass of water
c)
mass of fuel
44.
True or False? Neutrons have a negative charge
a)
True
b)
False
45.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
46.
Where are protons located in the atom?
a)
orbitals
b)
nucleus
c)
rings
d)
positive
47.
A molecule is
a)
two or more atoms bonded together
b)
one type of atom
c)
smaller than an atom 
d)
an element
48.

Covalent bonds are formed when

a)

positive and negative ions are attracted to each other

b)

positive metal ions are attracted to delocalised electrons

c)

positive nuclei are attracted to a shared pair of electrons

d)

none of the above

49.

What type of elements form Covalent Bonds?

a)

Metals only

b)

Non-metals only

c)

Metals and non-metals

50.

Which of the following is a pipette?

a)
b)
c)
d)
51.

Which of the following is a burette?

a)
b)
c)
d)
52.

Which of the following pH is strongly acidic?

a)

1.0

b)

7

c)

5

d)

14

53.

Which of the following pH is neutral?

a)

1.0

b)

7

c)

5

d)

14

54.

When a lithium atom forms an Li+ ion, the lithium atom

a)

gains a proton

b)

gains an electron

c)

loses a proton

d)

loses an electron

55.
What is an ore?
a)
a solid metal
b)
a rock cantaining a metal combined with other elements
c)
an element
d)
an object used to row a boat
56.
What is the name of the process that uses electricity to separate the elements in a compound?
a)
reduction
b)
electrolysis
c)
extraction
d)
mining
57.
Which statement is true:
Mg → Mg2+ + 2e–
a)
Mg gains 2 electrons
b)
Mg2+ loses 2 electrons
c)
Mg loses 1 electron
d)
Mg loses 2 electrons
58.

The closer the elements in the Electrochemical Series, the greater the voltage produced.

a)

True

b)

False

59.

Electrons will flow from the element higher in the Electrochemical Series to the one lower in the Electrochemical Series.

a)

True

b)

False

60.
Acids react with
a)
water to produce bases and salts
b)
salts to produce bases and water
c)
neither bases, salts nor water
d)
bases to produce salts and water
61.
What salt is produced if you react sodium hydroxide with hydrochloric acid?
a)
sodium hydroxide
b)
sodium sulfate
c)
sodium nitrate
d)
sodium chloride
62.
A salt is formed when nitric acid combines with sodium hydroxide. What is the name of the salt?
a)
Sodium chloride
b)
Sodium nitrate
c)
Hydrogen Nitrate
d)
Nirate
63.
The products of a neutralisation reaction are lithium sulfate and water. What is the name of the acid used to neutralise the alkali lithium hydroxide?
a)
hydrochloric acid
b)
sulfuric acid
c)
nitric acid
d)
phosphoric acid
64.
hydrochloric acid
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
65.
nitric acid
a)
HNO2
b)
HNO3
c)
HNO4
d)
H2NO3
66.
sulfuric acid
a)
HSO3
b)
H2SO3
c)
H2SO4
d)
H3SO4
67.
What is meant by the term isomer?
a)
Compounds which have the same general formula but a different structural formula
b)
Compounds which have the same general formula
c)
Compounds which have the same chemical formula
d)
Compounds which have the same chemical formula but a different structural formula
68.
How many carbons atoms are there in a molecule of butane?
a)
3
b)
4
c)
5
d)
6
69.
Is cyclopentane saturated or unsaturated?
a)
Saturated
b)
Unsaturated
70.
In energy calculations 'm' stands for
a)
mass
b)
mass of water
c)
mass of fuel
71.

When measuring the heat energy in a fuel, the experimental value is often less than expected. Why is this?

a)

Energy is lost to the surroundings

b)

The experiment is wrong

c)

The reaction is endothermic

72.
Heat energy can be calculated using
a)
Eh = cmΔT
b)
Eh = cΔT
c)
Eh = cTΔm
d)
Eh = TΔm
73.

Which measurements are required in an experiment to calculate heat energy?

a)

mass of the beaker

b)

mass of water

c)

temperature of the fuel

d)

the quantity of c

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