1 ® Cambridge IGCSE Chemistry (0620) Past and specimen paper questions and answers Contents Experimental techniques ........................................................................................ 2 Experimental techniques – answers ...................................................................... 6 Particles, atomic structure, ionic bonding, the Periodic Table ............................ 7 Particles, atomic structure, ionic bonding, the Periodic Table – answers ........ 16 Air and water ......................................................................................................... 19 Air and water – answers ....................................................................................... 26 Acids, bases and salts .......................................................................................... 28 Acids, bases and salts – answers ........................................................................ 42 Reaction rates ....................................................................................................... 46 Reaction rates – answers ..................................................................................... 61 Metals and the Reactivity Series .......................................................................... 64 Metals and the Reactivity Series – answers ........................................................ 75 Covalent bonding .................................................................................................. 78 Covalent bonding – answers ................................................................................ 83 Organic 1 ............................................................................................................... 85 Organic 1 – answers ............................................................................................. 95 Amount of substance ............................................................................................ 98 Amount of substance – answers ........................................................................ 103 Organic 2 ............................................................................................................. 105 Organic 2 – answers ........................................................................................... 111 Redox, electrochemistry and Group VII ............................................................. 113 Redox, electrochemistry and Group VII – answers ........................................... 125 Equilibria .............................................................................................................. 128 Equilibria – answers ............................................................................................ 130 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 2 Experimental techniques CORE question v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 3 0620 Cambridge IGCSE Chemistry Specimen Paper (2016) Paper 1 Question 2 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 4 EXTENSION question v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 5 0620 Cambridge IGCSE Chemistry Specimen Paper (2016) Paper 2 Question 1 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 6 Experimental techniques – answers Core 1 (a) (i) (Liebig) condenser (ii) 99 (iii) limonene floats on water/on top of the water Specimen Paper 1 2 C Extension 1 (d) (i) fuel or making esters or antiseptic or ethanoic acid or vinegar or thermometers (ii) does not dissolve or does not contain dyes (iii) two of these to develop it or locating agent samples are colourless to make them visible (iv) any two of these only one spot same position or Rf value compare with glucose Specimen Paper 2 1 C v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 7 Particles, atomic structure, ionic bonding, the Periodic Table CORE questions Core 1 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 8 Core 2 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 9 0620 Cambridge IGCSE Chemistry Specimen Papers (2016) Paper 1 Question 1 Paper 1 Question 3 Paper 1 Question 4 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers 10 Paper 1 Question 6 Paper 1 Question 7 v1 4Y11 Cambridge IGCSE Chemistry – past and specimen paper questions and answers