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Worksheets60 GCSE revision questions
Total questions: 60
Worksheet time: 59mins
Name
Class
Date
1.
What are the groups in the periodic table?
a)
A row of similar elements
b)
A column of similar elements
c)
The boxes in the table
2.
How many protons, neutrons and electrons are there in a 27Al13 atom
a)
13 protons, 27 neutrons and 14 electrons
b)
13 protons, 27 neutrons and 13 electrons
13 protons, 27 neutrons and 13 electrons
13 protons, 27 neutrons and 13 electrons
c)
13 protons, 14 neutrons and 13 electrons
3.
Which of the following does the nucleus contain?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
neutrons and electrons
neutrons and electrons
4.
Which of the following statements is correct?
a)
Protons are positively charged and neutrons are negatively charged.
b)
Protons are negatively charged and electrons are positively charged.
c)
Protons are positively charged and electrons are negatively charged.
5.
What is the atomic number of an atom?
a)
The number of atoms it contains.
b)
The number of protons it contains.
c)
The number of neutrons it contains.
6.
Which electronic structure is correct for an element with 17 electrons?
a)
1,7
b)
10,7
c)
2,8,7
7.
Two elements have these electronic structures: 2,1 and 2,8,1. What can you say about the elements?
a)
They are both in Group 1.
b)
They are both in Group 2.
c)
They are both in period 2.
8.
What do the elements in a group have the same number of?
a)
electrons
b)
occupied energy levels or shells
c)
electrons in the highest occupied energy level or outer shell
9.
What do the elements in a period have the same number of?
a)
electrons
b)
occupied energy levels or shells
c)
electrons in the highest occupied energy level or outer shell
10.
Which of these electronic structures belongs to a noble gas?
a)
2
b)
2,2
c)
2,8,2
11.
When an element from group 1 reacts with water:
a)
A metal hydroxide and carbon dioxide are formed
b)
A metal hydroxide and hydrogen are formed
c)
A metal hydroxide and oxygen are formed
12.
Why is sodium stored under oil?
a)
to make it nice and slippery
b)
to keep it away from air and water
c)
it burns with an orange flame
13.
TRUE OR FALSE?
A catalytic converter is a car part that helps the environment by changing harmful gases to less harmful gases.
A catalytic converter is a car part that helps the environment by changing harmful gases to less harmful gases.
a)
FALSE
b)
TRUE
14.
In the compound 2H2, The "2" means:
a)
there are "2" many molecues
b)
there are two moles or molecues of H2; it is the coefficient
15.
Solid magnesium, Mg, reacts with oxygen gas, O2, to form the solid magnesium oxide, MgO. Which equation is a balanced chemical equation for this chemical change?
a)
2Mg + O2 → 2MgO
b)
Mg + 2O → 2MgO
c)
Mg + O2 → MgO2
d)
Mg + O → MgO
16.
Which type of bond uses the transfer of electrons?
a)
covalent bonds
b)
ionic bonds
c)
metallic bonds
d)
all chemical bonds
17.
Which type of bond does a metal form?
a)
covalent bonds
b)
ionic bonds
c)
metallic bonds
d)
electrical bond
18.
Which type of bond is formed by two nonmetals?
a)
covalent bonds
b)
ionic bonds
c)
metallic bonds
d)
gas bond
19.
How many neutrons does potassium have?
a)
19
b)
20
c)
39
d)
58
20.
When the reaction below is balanced, what is the ratio of H2O to O2? CO2+H2O ---> C6H12O6 +O2
a)
3:2
b)
1:1
c)
2:1
d)
6:8
21.
3 H2(g) + N2(g) --> 2 NH3(g) How many particles of hydrogen are needed to make 4 NH3?
a)
1
b)
3
c)
4
d)
6
22.
A catalytic converter:
a)
Help keep the air clean
b)
the platinum is a catalyst for the reaction that changes the harmful gases into less harmful gases.
c)
uses heat and precious metals like platinum to convert engine exhaust into less harmful gases.
d)
all of these answers!
23.
Explain this graph
a)
A catalyst is used to speed up the reaction rate
b)
The catalyst provides a short cut to the products
c)
The red line shows how the catalyst saves energy
d)
All of these choices
24.
A chemical reaction that produces energy is a /an
a)
endothermic reaction
b)
exothermic reaction
c)
energy
d)
chemical reaction
25.
A chemical reaction that requires energy is a
a)
exothermic reaction
b)
endothermic reaction
c)
over reaction
26.
Bonds between ____________ are broken during a reaction.
a)
products
b)
catalyst
c)
reactants
d)
energy
27.
The compounds and elements that are present at the beginning of a reaction:
a)
reactants
b)
catalyst
c)
products
d)
energy
28.
A catalyst
a)
is added to a reaction to make it slow down
b)
breaks apart and is changed
c)
provides an energetic short cut to the products
29.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
30.
Metal carbonate + acid ---> ?
a)
salt + water
b)
salt + water + carbon dioxide
31.
What is neutralisation?
a)
acid + base --> salt + water
b)
acid + alkali --> salt + water
32.
What is thermal decomposition?
a)
when carbonates give off carbon dioxide
b)
when carbonates give off oxygen
33.
What is phase one in the development of the atmosphere?
a)
volcanoes release gases such as CO2
b)
green plants evolve to remove CO2 and produce oxygen
c)
evolution of animals to absorb oxygen
34.
What is phase three in the development of the atmosphere?
a)
volcanoes release gases such as CO2
b)
green plants evolve to remove CO2 and produce oxygen
c)
evolution of animals to absorb oxygen
35.
What happens when calcium carbonate is heated?
a)
turns into calcium oxide and carbon dioxide
b)
turns into calcium hydroxide
36.
What happens when calcium oxide is mixed with water?
a)
turns into calcium carbonate
b)
turns into calcium hydroxide
37.
Metal oxide + acid ---> ?
a)
salt + water
b)
salt + water + carbon dioxide
38.
Metal hydroxide + acid ---> ?
a)
salt + water
b)
salt + water + carbon dioxide
39.
How do you test for chlorine?
a)
squeaky pop test
b)
litmus paper turns red
c)
lit splint test
40.
How do you test for hydrogen?
a)
squeaky pop test
b)
litmus paper turns red
c)
lit splint test
41.
How do you test for oxygen?
a)
squeaky pop test
b)
litmus paper turns red
c)
lit splint test
42.
What is oxidation?
a)
gain of oxygen
b)
loss of oxygen
43.
What is reduction?
a)
gain of oxygen
b)
loss of oxygen
44.
Name one use for gases?
a)
heating and cooking
b)
lighter fluid
c)
fuel for lorries
d)
fuel for ships
45.
Name one use for kerosene?
a)
heating and cooking
b)
lighter fluid
c)
fuel for lorries
d)
jet fuel
46.
Name one use for fuel oil?
a)
heating and cooking
b)
lighter fluid
c)
fuel for lorries
d)
jet fuel
47.
Name one use for bitumen?
a)
surface roads
b)
lighter fluid
c)
fuel for lorries
d)
jet fuel
48.
The shorter the molecules, the?
a)
more flammable and less viscous it is
b)
less flammable and more viscous it is
49.
What is the formula for incomplete combustion?
a)
hydrocarbon + oxygen --> CO2 + water
b)
hydrocarbon + oxygen --> CO2 + water + carbon monoxide
50.
What is the formula for complete combustion?
a)
hydrocarbon + oxygen --> CO2 + water
b)
hydrocarbon + oxygen --> CO2 + water + carbon monoxide
51.
The longer the molecules, the?
a)
more flammable and less viscous it is
b)
less flammable and more viscous it is
52.
Alkanes have a?
a)
single C-C bond
b)
double C=C bond
53.
Alkenes have a?
a)
single C-C bond
b)
double C=C bond
54.
What is cracking?
a)
heating long chains so they become smaller
b)
heating short chains so they become longer
55.
What happens to alkenes when bromine water is added
a)
stays brown
b)
decolourises
56.
What happens to alkanes when bromine water is added
a)
stays brown
b)
decolourises
57.
How are polymers made?
a)
by closing double bonds
b)
by opening up double bonds
58.
Polyethene makes
a)
plastic containers
b)
plastic bags
c)
plastic chairs
59.
Polypropene makes
a)
plastic containers
b)
plastic bags
c)
plastic chairs
60.
What is polymerisation?
a)
joining up of shorter monomers to make polymers to make plastics
b)
breaking down of longer polymers into shorter monomers to make plastics
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