Friday 17 May 2024 – Morning
GCSE (9–1) Chemistry A (Gateway Science)
J248/03 (Higher Tier)
Time allowed: 1 hour 45 minutes
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which property is characteristic of a metal?
A It forms acidic oxides.
B It is brittle.
C It is malleable.
D It reacts with acid to form carbon dioxide gas.
Your answer [1]
2 Graphite and graphene are allotropes of carbon.
Which statement is correct about graphite and graphene?
A Graphite has delocalised electrons, graphene uses all electrons in bonding.
B Graphite has four bonds from each carbon atom, graphene only has three.
C Graphite is a giant covalent structure, graphene is not.
D Graphite is made up of layers, graphene is a single layer.
Your answer [1]
3 A lithium ion is Li+ and a phosphate ion is PO43 –.
What is the formula of lithium phosphate?
A Li(PO4)3
B Li2PO4
C Li2(PO4)3
D Li3PO4
Your answer [1]
, 3
4 Which statement about a reducing agent is correct?
A It oxidises another species and is itself oxidised.
B It oxidises another species and is itself reduced.
C It reduces another species and is itself oxidised.
D It reduces another species and is itself reduced.
Your answer [1]
5 Which statement about alkalis is correct?
A They form H+ ions in solution.
B They have a pH value greater than 7.
C They react with metals to form a salt and hydrogen.
D They turn universal indicator red.
Your answer [1]
6 Which equipment is needed to set up an electrolysis experiment?
A A battery, a beaker, a funnel and wires
B A battery, a beaker, electrodes and wires
C A battery, crocodile clips, electrodes and a thermometer
D A beaker, electrodes, a funnel and a thermometer
Your answer [1]
Turn over
, 4
7 Which products are formed in the electrolysis of sodium chloride solution?
Anode Cathode
A chlorine hydrogen
B chlorine sodium
C oxygen hydrogen
D oxygen sodium
Your answer [1]
8 How did Mendeleev group elements together to develop his Periodic Table?
A Based on chemical properties and left gaps
B Based on mass number and atomic number
C Based on physical properties and atomic number
D Based on physical properties and left gaps
Your answer [1]
9 What is the mass of one atom of beryllium, Be?
Relative atomic mass (Ar): Be = 9.0.
The Avogadro constant is 6.02 × 1023.
A 6.64 × 10–24 g
B 1.50 × 10–23 g
C 2.41 × 1024 g
D 5.42 × 1024 g
Your answer [1]
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