EXAMINATIONS COUNCIL OF SWAZILAND Swaziland General Certificate of Secondary Education CANDIDATE NAME CENTRE NUMBER CANDIDATE NUMBER PHYSICAL SCIENCE 6888/01 Paper 1 Short Answers October/November 2016 1 hour Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in blue or black pen in the spaces provided on the Question Paper. You may use an HB pencil for any diagrams, graphs, tables or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Do not write on the barcode Answer all questions. You may use an electronic calculator. You may lose marks if you do not show your working or if you do not use the appropriate units. A copy of the Periodic Table is printed on page 9. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 9 printed pages and 3 blank pages. ECOS 2016 [Turn over
2 1 As a candle burns, both physical and chemical changes take place. Identify these changes. physical change... chemical change... 2 Fig. 2.1 shows a circuit diagram with meters A 1 and A 2, battery B, switch S and resistor R. B A 2 A 1 S R Fig. 2.1 (a) Name the type of meter represented by meters A 1 and A 2. (b) The reading of meter A 1 is 0.3 A. State the reading of meter A 2.
3 Fig. 3.1 represents a nucleus of element X. 3 Fig. 3.1 key proton neutron (a) Which of the following notations represents an atom of this element? Circle the letter of the correct answer. A 3 4 X B 4 3 X C 7 3 X D 7 4 X [1] (b) Identify element X from the Periodic Table. 4 Fig. 4.1 shows two metal spheres, A and B. Sphere A is connected to the Earth. Sphere B is positively charged. A B Fig. 4.1 Sphere B is brought into contact with sphere A. Describe and explain what happens when sphere B is brought into contact with sphere A.......... [2] [Turn over
4 5 Explain why some electric light bulbs are filled with argon gas....... 6 Fig. 6.1 shows a bar magnet. Draw magnetic field lines around the magnet. N S Fig. 6.1 [2] 7 Hydrogen burns in air to produce a clean product. (a) Name this product. (b) Hydrogen is used in food production. Name one food product in which hydrogen is used in its manufacture. 8 Complete the following statement: Gamma rays can pass through paper and aluminium but can be greatly reduced by a few centimetres of... [1]
5 9 Soft and hard water differ by the metallic ions dissolved in them. (a) Name one metal ion present in hard water. (b) State one advantage of hard water. 10 Convert the following quantities into the required units. (a) 981 cm / s 2 expressed in m / s 2.... m / s 2 [1] (b) 0.03 g expressed in kg.... kg [1] 11 A crystal of potassium permanganate is placed in a beaker of water. The purple colour of potassium permanganate gradually spreads throughout the water by diffusion. Explain, using the kinetic particle theory, how this process occurs....... [3] 12 (a) Explain what is meant by the moment of a force about a point. (b) State two effects of a force on a body at rest. 1... 2... [2] [Turn over
6 13 Sodium and potassium are alkali metals with low densities. State two other physical properties of these metals, not usually found in other metals. 1... 2... [2] 14 A stone of mass 36 g has a density of 1.8 g / cm 3. Calculate the volume of the stone.... cm 3 [2] 15 Complete Table 15.1 by stating the formula and type of bond present in hydrogen chloride and potassium oxide. Table 15.1 name of compound formula type of bond hydrogen chloride potassium oxide K 2 O [3]
7 16 Fig. 16.1 shows the velocity-time graph for a moving object during a period of 12 seconds. velocity m / s 10 5 0 4 8 12 time / s Fig. 16.1 (a) Determine the time interval during which the object is moving with positive acceleration. (b) Calculate the distance moved by the object in the first 4 seconds.... [2] 17 A list of gases is shown below. chlorine methane nitrogen oxygen sulfur dioxide gases from the list to answer the following questions. You may use any of the gases once, more than once or not at all. Name the gas that: (a) causes acid rain,... [1] (b) is used in welding,... [1] (c) is the main constituent of natural gas.... [1] [Turn over
8 18 Fig. 18.1 shows an arrow placed in front of a plane mirror. Fig. 18.1 Draw, on Fig. 18.1, as accurately as possible, the image of the arrow formed by the plane mirror. [3]
The volume of one mole of any gas is 24 dm 3 at room temperature and pressure (r.t.p.). b b = atomic (proton) number Key X X = atomic symbol 232 Th Thorium 90 Pa Protactinium 91 U Uranium 92 Np Neptunium 93 Pu Plutonium 94 Am Americium 95 Cm Curium 96 Bk Berkelium 97 Cf Californium 98 Es Einsteinium 99 Fm Fermium 100 Md Mendelevium 101 No Nobelium 102 Lr Lawrencium 103 a a = relative atomic mass 231 238 237 244 243 247 247 251 252 257 258 259 260 * 58 71 Lanthanoid series 90 103 Actinoid series 140 Ce Cerium 58 141 144 Pr Nd Praseodymium Neodymium 59 60 Pm Promethium 61 147 150 Sm Samarium 62 152 Eu Europium 63 157 Gd Gadolinium 64 159 Tb Terbium 65 163 Dy Dysprosium 66 165 Ho Holmium 67 167 Er Erbium 68 169 Tm Thulium 69 173 Yb Ytterbium 70 175 Lu Lutetium 71 Fr Francium 87 Ra Radium 88 223 226 227 Ac Actinium 89 133 Cs Caesium 55 137 Ba Barium 56 139 La Lanthanum 57 * 178 Hf Hafnium 72 181 Ta Tantalum 73 184 W Tungsten 74 186 Re Rhenium 75 190 Os Osmium 76 Iridium 77 192 Ir 195 Pt Platinum 78 197 Au Gold 79 201 Hg Mercury 80 204 Tl Thallium 81 207 Pb Lead 82 Bismuth 83 209 209 210 222 Bi Po Polonium 84 At Astatine 85 Rn Radon 86 85 Rb Rubidium 37 88 Sr Strontium 38 89 Y Yttrium 39 91 Zr Zirconium 40 93 Nb Niobium 41 96 Mo Molybdenum 42 Tc Technetium 43 101 Ru Ruthenium 44 103 Rh Rhodium 45 106 Pd Palladium 46 108 Ag Silver 47 112 Cd Cadmium 48 Indium 49 115 In 119 Sn Tin 50 122 Sb Antimony 51 128 Te Tellurium 52 Iodine 53 127 I 131 Xe Xenon 54 9 39 K Potassium 19 40 Ca Calcium 20 45 Sc Scandium 21 48 Ti Titanium 22 51 V Vanadium 23 52 Cr Chromium 24 55 Mn Manganese 25 56 Fe Iron 26 59 Co Cobalt 27 59 Ni Nickel 28 64 Cu Copper 29 65 Zn Zinc 30 70 Ga Gallium 31 73 Ge Germanium 32 75 As Arsenic 33 79 Se Selenium 34 80 Br Bromine 35 84 Kr Krypton 36 23 Na Sodium 11 24 Mg Magnesium 12 27 Al Aluminium 13 28 Si Silicon 14 31 P Phosphorus 15 32 S Sulfur 16 35.5 Cl Chlorine 17 40 Ar Argon 18 3 5 6 7 Li Lithium 9 Be Beryllium 4 11 B Boron 12 C Carbon 14 N Nitrogen 7 8 16 O Oxygen 19 F Fluorine 9 20 Ne Neon 10 1 H Hydrogen 1 2 4 He Helium I II III IV V VI VII 0 Group DATA SHEET The Periodic Table of the Elements
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