Science (Chemistry) 1SC0/2CF PAPER 2. With Marking
Scheme Merged
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Tuesday 11 June 2024
reference 1SC0/2CF
Morning (Time: 1 hour 10 minutes) Paper
Combined Science
PAPER 5
Foundation Tier
You must have: Total Marks
Calculator, ruler, Periodic table (enclosed)
Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with your name,
• centre number and candidate number.
• Answer all questions.
Answer the questions in the spaces provided
• – there may be more space than you need.
• Calculators may be used.
• Any diagrams may NOT be accurately drawn, unless otherwise indicated.
You must show all your working out with your answer clearly identified
at the end of your solution.
• The total mark for this paper is 60.
• The marks for each question are shown in brackets
• – use this as a guide as to how much time to spend on each question.
In questions marked with an asterisk (*), marks will be awarded for your ability to
structure your answer logically, showing how the points that you make are related
Information
or follow on from each other where appropriate.
•Advice
Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end.
Turn over
P74443A
©2024 Pearson Education Ltd.
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F:1/1/1/1/1/1/1/1/1/
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
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answer, put a line through the box and then mark your new answer with a cross .
1 This question is about the metals and non-metals in period 3 of the periodic table.
(a) Figure 1 shows some data about some of the elements in period 3.
symbol atomic number melting point in °C
Na 11 98
Mg 12 650
Al 13 660
Si 14 1410
P 15 44
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Cl 17 –101
Ar 18 –189
Figure 1
Use the periodic table to answer these questions.
(i) Give the name of the element in period 3 that is not shown in Figure 1.
(1)
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(ii) Give the relative atomic mass of silicon.
(1)
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(iii) State which metal and which non-metal in Figure 1 have the
lowest melting points.
(2)
metal with lowest melting point
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non-metal with lowest melting point
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2
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, (b) Alkali metals react with water to produce an alkaline solution and hydrogen gas.
A test tube of gas can be tested to see if the gas is hydrogen by putting a
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lighted splint at the top of the test tube.
A student suggests the following method to show that an alkaline solution
and hydrogen gas are produced in this reaction.
step 1 pour 150 cm3 water into the container shown in Figure 2
step 2 add a small piece of lithium to the water in the container shown in
Figure 2 step 3 hold a lighted splint above the container
step 4 hold some damp red litmus paper above the mixture in the container
250 cm3
200
150
100
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50
Figure 2
(i) Give the name of the container shown in Figure 2.
(1)
.............................................................................................
(ii) A teacher says that step 3 and step 4 will not work to show that
hydrogen gas and an alkaline solution are produced in the reaction.
Explain one change that could be made in each step to
make the method work.
(3)
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step 3 ....................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
step 4 ....................................................................................................................................................................................................................................................................
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(Total for Question 1 = 8 marks)
3
,
*P74443A0320* Turn over