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WorksheetsYear 11 Revision (27/10/25)
Total questions: 35
Worksheet time: 33mins
Steam is condensing into water.
The temperature of the water is decreasing.
Ice is melting.
Particles are losing heat to the surroundings.
A representation of an atom is shown.
What is the nucleon number of this atom?
6
7
12
13
10.19
20.19
21.00
30.19
Lithium chloride is an ionic compound and silicon(IV) oxide is a covalent compound.
Which statement about both compounds is correct?
They are not soluble in water
They conduct electricity when melted.
They do not conduct electricity in solid form.
They have low melting points.
Which equations are balanced?
1 and 2
1 and 4
2 and 3
3 and 4
Graphite has a giant covalent structure. Which statements about graphite are correct?
1 Carbon atoms form four covalent bonds with neighbouring atoms.
2 There are delocalised electrons between layers of carbon atoms.
3 Graphite is a useful lubricant.
4 Graphite is a good conductor of electricity.
1 and 2
1, 3 and 4
2, 3 and 4
3 and 4
Which reaction pathway diagram represents an endothermic reaction?
–3226 kJ /mol
–884 kJ /mol
–486 kJ /mol
–442 kJ /mol
A gaseous substance is slowly cooled and the temperature recorded every second.
The results are shown on the graph.
At which point is the substance a solid?
A
B
C
D
The diagram shows an experiment to measure the rate of a chemical reaction.
Which change decreases the rate of reaction?
adding water to the flask
heating the flask during the reaction
using more concentrated acid
using powdered metal
Which statements about the rate of diffusion of the gases ammonia, carbon monoxide, nitrogen and oxygen are correct?
1 Nitrogen and carbon monoxide will diffuse at the same rate.
2 Oxygen will diffuse slowest because it is an element, whereas the others are compounds.
3 Ammonia will diffuse fastest.
1 and 2
1 and 3
1 only
2 and 3
Which statement explains why isotopes of an element have the same chemical reactions?
They have different numbers of neutrons.
They have ions with different numbers of electrons.
They have the same number of outer shell electrons.
They have the same number of protons.
Magnesium reacts with oxygen to form magnesium oxide.
What happens to magnesium atoms and oxygen atoms during this reaction?
Magnesium and oxygen share two electrons
Magnesium gains two electrons and oxygen loses two electrons.
Magnesium loses one electron and oxygen gains one electron.
Magnesium loses two electrons and oxygen gains two electrons.
Which substance is a mixture?
air
graphite
oxygen
water
1.0 mol of silver nitrate, AgNO3, contains 1.2 x 1024 ions. How many ions are there in 0.25 mol of iron(III) oxide, Fe2O3?
A student is asked to measure the time taken for 0.4 g of magnesium carbonate to react completely with 25.0 cm3 of dilute hydrochloric acid.
Which pieces of apparatus does the student need?
balance, stop-clock, pipette
balance, stop-clock, thermometer
balance, pipette, thermometer
stop-clock, pipette, thermometer
Which two gases will diffuse at the same rate, at the same temperature?
carbon monoxide and carbon dioxide
carbon monoxide and nitrogen
chlorine and fluorine
nitrogen and oxygen
The diagram shows three pieces of apparatus that are used for measuring the volume of a liquid.
What are these pieces of apparatus?
1 burette
2 measuring cylinder
3 pipette
1 burette
2 pipette
3 measuring cylinder
1 measuring cylinder
2 burette
3 pipette
1 measuring cylinder
2 pipette
3 burette
Which dot-and-cross diagram shows the arrangement of outer shell electrons in a molecule of hydrogen chloride?
A compound of element X has the formula X2O and a relative formula mass of 144.
What is element X?
copper, Cu
gadolinium, Gd
sulfur, S
tellurium, Te
The diagram shows the electrolysis of concentrated hydrochloric acid and concentrated aqueous sodium chloride using carbon electrodes.
At which electrodes is hydrogen produced?
electrode 1 only
electrodes 1 and 3
electrode 2 only
electrodes 2 and 4
The equation shows the reaction between magnesium and sulfuric acid. [Ar: H, 1; O, 16; Mg, 24; S, 32]
Mg + H2SO4 → MgSO4 + H2
In this reaction, which mass of magnesium sulfate is formed when 6g of magnesium react with excess sulfuric acid?
8
24
30
60
A compound with the formula XF2 has a relative formula mass of 78.
What is element X?
argon
calcium
neon
zirconium
What is the balanced chemical equation for the reaction between calcium and water?
Methane, CH4, burns in the air to form carbon dioxide and water.
What is the balanced equation for this reaction?
Which reaction is endothermic?
acid neutralising alkali causing a temperature increase
adding magnesium to hydrochloric acid
calcium carbonate decomposing when heated
combustion of fossil fuels
When ammonium nitrate is added to water the temperature of the water decreases.
The ammonium nitrate can be recovered by evaporating the water added.
Which explains these observations?
The ammonium nitrate dissolves in the water and the process is endothermic.
The ammonium nitrate reacts with the water and the process is endothermic
The ammonium nitrate dissolves in the water and the process is exothermic.
The ammonium nitrate reacts with the water and the process is exothermic.
The diagrams show the arrangement of particles in three different physical states of substance X.
Which statement about the physical states of substance X is correct?
Particles in state 1 vibrate about fixed positions.
State 1 changes to state 2 by diffusion.
State 2 changes directly to state 3 by condensation.
The substance in stage 3 has a fixed volume
Two atoms of magnesium, Mg, react with one molecule of oxygen, O2.
What is the formula of the product?
Three electrolysis cells are set up. Each cell has inert electrodes. The electrolytes are listed below.
cell 1: aqueous sodium chloride
cell 2: concentrated hydrochloric acid
cell 3: molten lead (II) bromide
In which cells is a gas formed at both electrodes?
1 and 2
1 and 3
2 only
3 only
a series or family of similar compounds with similar chemical properties due to the presence of the same functional group.
(a)
An unambiguous description of the way the atoms in a molecule are arranged
(a)
(a) shows the spatial arrangement of all the atoms and bonds in a molecule
(a) are compounds that have the same molecular formula but different structural formulae
Name the organic compound shown.
butanoic acid
butanol
propanoic acid
propanol
