EXAMINATIONS COUNCIL OF SWAZILAND Swaziland General Certificate of Secondary Education

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1 EXAMINATIONS COUNCIL OF SWAZILAND Swaziland General Certificate of Secondary Education PHYSICAL SCIENCE 6888/01 Paper 1 Short Answers October/November 2013 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 dark blue or black pen in the spaces provided on the Question Paper. You may use a soft pencil for any diagrams, graphs, tables or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions. You may use a calculator. A copy of the Periodic Table is printed on page 12. 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. 1 hour This document consists of 11 printed pages and 1 blank page. [Turn over

2 In questions 1 to 3 inclusive, circle the correct answer. 2 1 Which of the following quantities has a magnitude and direction? A B C distance force kinetic energy D temperature [1] 2 Fig. 2.1 shows four pieces of apparatus used in the laboratory. A student requires 13.5 cm 3 of dilute hydrochloric acid to neutralise a sodium hydroxide solution. Which piece of apparatus should he use? cm A B C D Fig. 2.1 [1]

3 3 A student bubbles a gas through water. The resulting solution has a ph of 4. 3 Which of the following could be the gas? A B C ammonia argon hydrogen D sulfur dioxide [1] 4 The diagram shows a packet of cooking salt hung on a spring balance. spring balance What quantity of the packet is being measured?... [1] 5 State the speed of microwaves in a vacuum.... m / s [1] [Turn over

4 6 Fig. 6.1 shows two weightlifters. They both lift the same mass to the same height above the ground, but weightlifter B takes longer to lift the mass than weightlifter A. 4 weightlifter A weightlifter B Fig. 6.1 Complete the following statement, using the listed words, to make it true. less the same amount of more zero Weightlifter B does work and uses power compared to weightlifter A. [2] 7 The left hand column gives the names of some groups or series of elements. The right hand column gives some properties of the group or series. Match each group or series with the correct property by drawing a line from the group or series to the correct property. One has been done for you. alkali metals form coloured compounds halogens soft with low density noble gases diatomic transition metals unreactive [3]

5 8 A student accurately measures the diameter of a 330 ml soft drink can and the thickness of its walls. 5 Name the best instrument that can be used to measure the (a) diameter of the can, (b) thickness of the can wall. 9 Table 9.1 shows the composition of five atoms or ions. Table 9.1 particle number of protons number of neutrons number of electrons A B C D E State which of the particles is (a) a neutral atom,...[1] (b) a positive ion,...[1] (c) an isotope of D....[1] [Turn over

6 10 Fig shows a wave moving along a spring. The wave is produced by moving the end P of the spring to and fro as shown by the arrows. 6 P A B C D Fig (a) State the type of wave travelling along the spring. (b) Study the diagram and, with reference to regions AB and CD, explain how the wave moves along the spring. 11 A student rubs a balloon on her hair and the balloon becomes negatively charged. (a) Explain, in terms of electron movement, why the balloon becomes charged. (b) Describe what will happen when another negatively charged balloon is brought near the balloon. 12 Hydrogen and helium are less dense than air. Suggest why (a) helium is preferred to hydrogen for filling weather balloons, (b) in real life, hydrogen is used instead of helium for filling weather balloons.

7 13 The distance between the Earth and the Moon is determined by measuring the time it takes for light waves to travel to the Moon and back. 7 Explain why it is not possible to use sound waves in this experiment? Fig shows a tower that is used to separate crude oil into different fractions. crude oil furnace Fig (a) Name the separation technique that is shown in Fig (b) Name the fractions that are collected at points B and G. B... G...[2] [Turn over

8 15 Fig shows a plotting compass with the needle pointing to magnetic North. 8 north magnetic north Fig Three similar plotting compasses, A, B and C, are placed near a magnet. B A C Fig In Fig (a) draw the compass needle in A and B, [1] (b) label the poles of the bar magnet. [1] 16 Sugar dissolves in water. Chlorine bleaches litmus paper. these two processes to describe one difference between a physical change and a chemical change [2] 17 State one difference between boiling and evaporation [2]

9 18 An atom of the element Z has the electronic structure (a) How many hydrogen atoms will combine with one atom of element Z? (b) Write the formula of the compound formed between hydrogen and Z. (c) Name the type of bonding formed between hydrogen and Z. 19 Thermionic emission is the release of particles by heated wires. (a) Name the particles that are released. (b) State one property of the particles. 20 Table 20.1 shows the reaction of copper(ii) sulfate with three different metals. Table 20.1 metal observations magnesium iron a brown solid is formed silver Complete Table 20.1 by writing in the observations. One has been done for you. [2] [Turn over

10 21 Fig shows a relationship between current and potential difference for a metallic conductor current / A potential difference / V Fig Fig to calculate the resistance of the metallic conductor.... Ω [2]

11 11 BLANK PAGE 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 (ECOS) 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. 6888/01/O/N/12

12 12 DATA SHEET The Periodic Table of the Elements Group I II III IV V VI VII H Hydrogen 2 4 He Helium 3 7 Li Lithium 4 9 Be Beryllium 5 11 B Boron 6 12 C Carbon 7 14 N Nitrogen 8 16 O Oxygen 9 19 F Fluorine Ne Neon Na Sodium Mg Magnesium Al Aluminium Si Silicon P Phosphorus S Sulfur Cl Chlorine Ar Argon K Potassium Ca Calcium Sc Scandium Ti Titanium V Vanadium Cr Chromium Mn Manganese Fe Iron Co Cobalt Ni Nickel Cu Copper Zn Zinc Ga Gallium Ge Germanium As Arsenic Se Selenium Br Bromine Kr Krypton Rb Rubidium Sr Strontium Y Yttrium Zr Zirconium Nb Niobium 96 Mo Molybdenum Tc Technetium Ru Ruthenium Rh Rhodium Pd Palladium Ag Silver Cd Cadmium In Indium Sn Tin Sb Antimony Te Tellurium I Iodine Xe Xenon Cs Caesium Ba Barium 139 La Lanthanum 57 * Hf Hafnium Ta Tantalum W Tungsten Re Rhenium Os Osmium Ir Iridium Pt Platinum Au Gold Hg Mercury Tl Thallium Pb Lead Bi Bismuth 84 Po Polonium 85 At Astatine 86 Rn Radon Fr Francium Ra Radium 227 Ac Actinium 89 * Lanthanoid series Actinoid series Key b a X a = relative atomic mass X = atomic symbol b = atomic (proton) number Ce Cerium 232 Th Thorium 141 Pr Praseodymium Pa Protactinium Nd Neodymium 238 U Uranium Pm Promethium Sm Samarium Eu Europium Gd Gadolinium Tb Terbium Dy Dysprosium Np Neptunium 94 Pu Plutonium 95 Am Americium 96 Cm Curium 97 Bk Berkelium 98 Cf Californium Ho Holmium Es Einsteinium Er Erbium Fm Fermium Tm Thulium Md Mendelevium Yb Ytterbium No Nobelium Lu Lutetium Lr Lawrencium 103 The volume of one mole of any gas is 24dm 3 at room temperature and pressure (r.t.p.).