Pearson Edexcel Level 1 /Level 2 GCSE (9-1 ) Time 1 hour 10 minutes Paper reference 1 SCO/2CF Combined Science PAPER 5 Foundation Tier. 2022

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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 quest ... ions 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. Information • 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 or follow on from each other where appropriate. • There is a periodic table on the back cover of the paper. 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. You must have: Calculator, ruler Combined Science PAPER 5 Foundation Tier Time 1 hour 10 minutes 1SC0/2CF Pearson Edexcel Level 1/Level 2 GCSE (9–1) *P69475A0220* 2  BLANK PAGE *P69475A0320* Turn over 3  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 answer, put a line through the box and then mark your new answer with a cross . 1 This question is about elements in group 1 of the periodic table. (a) Figure 1 shows the symbols of the first three elements in group 1 of the periodic table and their melting points. symbol melting point in °C Li 181 Na 98 K 64 Figure 1 Use the periodic table to answer these questions. (i) Give the symbol of another element in group 1. (1) .............................................................. (ii) Give the atomic number of lithium. (1) .............................................................. (iii) Describe the trend in the melting points of the elements in Figure 1. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... *P69475A0420* 4  (b) The elements in group 1 react very vigorously with water. A student suggests this method to see what happens when sodium reacts with water. step 1 put on safety glasses and a laboratory coat step 2 cut a 2cm×2cm×2cm cube of sodium step 3 put a few drops of water in the container shown in Figure 2 step 4 add the sodium to the water in the container and observe the reaction (i) Figure 2 shows a diagram of the container the student suggested for step 3. Figure 2 Give the name of the container shown in Figure 2. (1) ............................................................................................................................................ *P69475A0520* Turn over 5  (ii) A teacher says that the method is not safe because the reaction is too vigorous. Explain changes that could be made to step 2 and to step 3 that would make the method safer. (3) step 2: change and explanation .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... step 3: change and explanation .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 1 = 8 marks) *P69475A0620* 6  2 Some reactions are exothermic and some reactions are endothermic. (a) What does an exothermic reaction always give out? (1) A heat energy B light C a gas D sound (b) In an experiment, a solid is mixed with a liquid. The temperature change of the mixture is measured. Figure 3 shows the apparatus that is used. A C B D Figure 3 (i) Give the letter of the piece of apparatus, A, B, C or D, in Figure 3 that is used to measure the temperature. (1) .............................................................. (ii) Give the name of the piece of apparatus B shown in Figure 3. (1) ............................................................................................. (iii) The piece of apparatus labelled C is made from polystyrene. State why polystyrene is a better material t [Show More]

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