The Periodic Table of Elements
* The Lanthanides (atomic numbers 58 – 71) and the Actinides (atomic numbers 90 – 103) have been omitted.
Relative atomic masses for Cu and Cl have not been rounded to the nearest whole number. .
Li 7 3 lithium Na 23 11 sodium K 39 19 potassium Rb 85 37 rubidium Cs 133 55 caesium Fr
87
[223]
francium Be 12 Key 9 4 beryllium atomic symbol relative atomic mass atomic (proton) number name Mg 24 12 magnesium Ca 40 20 calcium Sr 88 38 strontium Ba 137 56 barium Ra [226] 88 radium Sc 45 21 scandium Y 89 39 yttrium La* 139 57 lanthanum Ac* [227] 89 actinium Ti 48 22 titanium Zr 91 40 zirconium Hf 178 72 hafnium Rf [267] 104 rutherfordium V 51 23 vanadium Nb 93 41 niobium Ta 181 73 tantalum Db [270] 105 dubnium Cr 52 24 chromium Mo 96 42 molybdenum W 184 74 tungsten Sg [269] 106 seaborgium Mn 55 25 manganese Tc [97] 43 technetium Re 186 75 rhenium Bh [270] 107 bohrium H 1 hydrogen Fe 56 26 1 iron Ru 101 44 ruthenium Os 190 76 osmium Hs [270] 108 hassium Co 59 27 cobalt Rh 103 45 rhodium Ir 192 77 iridium Mt [278] 109 meitnerium Ni 59 28 nickel Pd 106 46 palladium Pt 195 78 platinum Ds [281] 110 darmstadtium Cu 63.5 29 copper Ag 108 47 silver Au 197 79 gold Zn 65 30 zinc Cd 112 48 cadmium Hg 201 80 mercury B 11 5 boron Al 27 13 aluminium Ga 70 31 gallium In 115 49 indium Tl 204 81 thallium C 12 6 carbon Si 28 14 silicon Ge 73 32 germanium Sn 119 50 tin Pb 207 82 lead N 14 7 nitrogen P 31 15 phosphorus As 75 33 arsenic Sb 122 51 antimony Bi 209 83 bismuth O 16 8 oxygen S 32 16 sulfur Se 79 34 selenium Te 128 52 tellurium Po [209] 84 polonium F 19 9 fluorine Cl 35.5 17 chlorine Br 80 35 bromine I 127 53 iodine At [210] 85 astatine Ne 345670 20 10 neon He 4 2 helium Ar 40 18 argon Kr 84 36 krypton Xe 131 54 xenon Rn [222] 86 radon Rg [281] 111 roentgenium Cn [285] 112 copernicium Nh [286] 113 nihonium Fl [289] 114 flerovium Mc [289] 115 moscovium Lv [293] 116 livermorium Ts [293] 117 tennessine Og [294] 118 oganesson
Science:
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GCSE CHEMISTRY
Higher Tier Paper 1
Monday 22 May 2023
Materials
For this paper you must have:
• a ruler
• a scientific calculator
• the periodic table (enclosed)
Instructions
• Use black ink or black ball-point pen.
• Pencil should only be used for drawing.
• Fill in the boxes at the top of this page.
• Answer all questions in the spaces provided. Do not write outside the box around each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want to be marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 100.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation in your answers.
*JUN2384621H01* IB/M/Jun23/E15 8462/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL
Morning Time allowed: 1 hour 45 minutes
0 1
Discoveries in chemistry led to a better understanding of atomic structure.
0 1 . 1 Atoms were originally thought to be tiny spheres that could not be divided.
The plum pudding model of the atom was then developed.
Describe the plum pudding model of the atom.
[2 marks]
0 1 . 2
Atoms contain electrons, neutrons and protons.
Write these three particles in order of their discovery.
Earliest
Latest
[1 mark]
2 *02* IB/M/Jun23/8462/1H Do not write outside the box
Figure 1 represents the plum pudding model of the atom.
Figure 1
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