Download [PDF] April 2017 CAIE P2 Questions 1113 Science Cambridge Lower Secondary Checkpoint

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This document consists of 14 printed pages and 2 blank pages. IB17 05_1113_02/4RP © UCLES 2017 [Turn over   Cambridge International Examinations Cambridge Secondary 1 Checkpoint SCIENCE 1113/02 Paper 2 April 2017 45 minutes Candidates answer on the Question Paper. Additional Materials: Pen Calculator Pencil Ruler READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. You should show all your working in the booklet. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 50.

2 © UCLES 2017 1113/02/A/M/17 1 Complete the sentence. Choose from the list. both the south pole and the north pole neither pole only the north pole only the south pole An iron nail is attracted to of a magnet. [1] 2 This question is about sound. Tick () the correct sentence about the pitch of sound. A high pitched sound is always loud. A high pitched sound always has a high frequency. A high pitched sound always has a large amplitude. A high pitched sound always has a low frequency. A high pitched sound must have a large wavelength. [1]

3 © UCLES 2017 1113/02/A/M/17 [Turn over 3 (a) Scientists classify arthropods into four main groups depending on their number of legs. The diagrams show examples of three of these groups. Draw straight lines to match each of the arthropods to its group. 4 pairs of legs 5 pairs of legs 3 pairs of legs arthropods group arachnid crustacean insect myriapod [3] (b) All arthropods have jointed legs. Describe two other characteristics that would identify an arthropod. 1 2 [2]

4 © UCLES 2017 1113/02/A/M/17 4 Here are some chemical formulas. Al CaO Cl 2 CO 2 KNO 3 MgCO 3 NaCl P 2O5 (a) Choose the formulas from the list. Each formula can be used once, more than once or not at all. (i) Write down the formulas of two elements. and [1] (ii) Write down the formulas of all the compounds containing carbon. [1] (iii) Write down two formulas that show compounds made from three elements. and [1] (iv) Fertilisers are often compounds of potassium. Write down the formula for a fertiliser that is a compound of potassium. [1] (b) Write down the name of the compound with the formula CaO. [1]

5 © UCLES 2017 1113/02/A/M/17 [Turn over 5 Energy is always conserved. Complete the energy diagrams to show that energy is conserved. (a) 200 J of electrical energy 80 J of light energy ............. J of thermal energy [1] (b) ........... J of electrical energy 60 J of light energy 40 J of thermal energy [1]

6 © UCLES 2017 1113/02/A/M/17 6 The world human population needs increasing amounts of energy. A large amount of energy is obtained by burning fuels. (a) Look at the list. Circle the fuel that is a renewable source of energy. biomass coal gasoline (petrol) natural gas [1] (b) Burning these fuels releases carbon dioxide into the environment. (i) Describe some harmful effects of increasing levels of carbon dioxide on the environment. [3] (ii) Suggest which of these fuels would be the best to burn, if we must continue to burn fuel. coal gasoline (petrol) hydrogen wood Explain your answer. fuel explanation [1]

7 © UCLES 2017 1113/02/A/M/17 [Turn over 7 Look at the table of elements in Group 7 (Group 17) of the modern Periodic Table. element atomic mass state at room temperature melting point in °C boiling point in °C fluorine 19 –220 –188 chlorine 35 gas –101 bromine 80 liquid –7 59 iodine 127 solid 114 184 astatine 210 solid 301 337 (a) Complete the sentence about the relationship between atomic mass and melting point. As the atomic mass the melting point .[1] (b) What is the state of fluorine at room temperature? [1] (c) Estimate the boiling point of chlorine. Choose from the list. –201°C –34°C 65°C 138°C The boiling point of chlorine is C [1]

8 © UCLES 2017 1113/02/A/M/17 8 Jamila uses the internet. She finds some information about adding coloured light together. red magentacyan yellow ........................................ ........................................ ........................................ Write the correct colours of light in the three boxes on the diagram. [2] 9 The scientist Copernicus was born in 1473. At this time people thought that the Earth was the centre of the universe. What did Copernicus think was the centre of the universe? [1]

9 © UCLES 2017 1113/02/A/M/17 [Turn over 10 Pierre grows pepper plants. To find the effect of fertiliser on the growth of these pepper plants,  he sows three groups of 50 seeds  he places them in a glasshouse and waters one group with organic fertiliser, one with artificial fertiliser and one with distilled water  he measures the average height of the pepper plants every 4 weeks  he counts how many peppers each group of plants have produced after 16 weeks. The table shows the results of his investigation. treatment average height of pepper plants in cm number of peppers after 16 weeks 4 weeks 8 weeks 12 weeks distilled water 38 70 98 46 organic fertiliser 42 84 124 104 artificial fertiliser 48 88 130 127 (a) (i) Which variable does Pierre change in his investigation? [1] (ii) State two variables Pierre must control in his investigation. 1 2 [2] (iii) Suggest why Pierre waters one group of plants with distilled water. [1] (b) What conclusions can be made about the effects of adding fertiliser on (i) the height of pepper plants? [1] (ii) the number of peppers the plants produced? [1]

10 © UCLES 2017 1113/02/A/M/17 11 Complete the table about the reactivity of metals. metal reaction with cold water reaction with dilute hydrochloric acid sodium violent reaction to form hydrogen calcium bubbles and gives hydrogen iron no reaction copper no reaction gold no reaction [5] 12 Blessy puts two books on a table. book B book A The books are the same size and the same mass. Which book exerts the greater pressure on the table? Explain your answer. [1]

11 © UCLES 2017 1113/02/A/M/17 [Turn over 13 Mike and Oliver sit on a see-saw. 500 N 1000 N Oliver Mike pivot 2 m1 m Mike is smaller than Oliver but the see-saw balances. Explain why it balances, using the principle of moments. [3] 14 Mia investigates an endothermic reaction. She adds sodium carbonate to dilute ethanoic acid. (a) The temperature of the dilute ethanoic acid at the start is 20 °C. What will happen to the temperature when the sodium carbonate is added? [1] (b) When sodium carbonate reacts with dilute ethanoic acid a salt is made. A gas and a liquid are also made. Which gas and liquid are made when carbonates react with acids? gas liquid [2]

12 © UCLES 2017 1113/02/A/M/17 15 The properties of sound can be explained using a diagram. ear dots loudspeaker AB (a) What do the dots represent? Circle the correct answer. air particles heat particles light particles solid particles sound particles [1] (b) Complete the sentences. The particles in the diagram move. Area A is called a compression because the particles are Area B is called a rarefaction because the particles are [2]

13 © UCLES 2017 1113/02/A/M/17 [Turn over 16 Chen opens a bottle of liquid perfume. After a few seconds he can smell the perfume. Some of the liquid perfume evaporates into a gas. The perfume gas then diffuses. What happens to the particles of perfume during diffusion? Tick () the correct box. The particles have less energy. The particles move closer together. The particles move more slowly. The particles spread out. [1]

14 © UCLES 2017 1113/02/A/M/17 17 Aiko draws a bar chart to show the mean (average) distance of planets from the Sun. distance from the Sun in large distance units 0 2 4 6 8 10 planets 12 ABC DE F (a) Planet C is the Earth. What are the names of planets A and B? Planet A Planet B [1] (b) What planet is between 8 and 12 large distance units from the Sun? Choose from A, B, C, D, E or F. [1] (c) How many planets are less than 8.2 large distance units from the Sun? Circle the correct answer. 3 4 5 6 7 [1]

15 © UCLES 2017 1113/02/A/M/17 BLANK PAGE

16 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2017 1113/02/A/M/17 BLANK PAGE