Cambridge O Level · 5070 · Paper 2 · Theory

Chemistry 5070/21 May/June 2010 past paper

Cambridge O Level Chemistry (5070) Paper 2 (Theory), variant 1, May/June 2010: the question paper and its official mark scheme, 9 questions worth 85 marks. Free to open, no account needed.

Questions: 9
Marks: 85

Open the question paper Mark scheme

File names: 5070_s10_qp_21 · 5070_s10_ms_21

Topics in this paper

Which syllabus chapters 5070/21 May/June 2010 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Chemical reactions	2	20
Organic chemistry	2	20
Metals	1	14
Chemistry of the environment	1	10
Stoichiometry	1	8
Atoms, elements and compounds	1	7
The Periodic Table	1	6

Questions in 5070/21 May/June 2010

Question 1The Periodic Table · 6 marks
A1 Choose from the following elements to answer the questions below. bromine calcium copper chlorine hydrogen iodine iron nickel sulfur vanadium zinc Each element can be used once, more than once or not at all. Name an element which (a) …
Question 2Chemical reactions · 10 marks
For Examiner’s Use A2 Aqueous hydrogen peroxide, H2O2(aq), is used to sterilise contact lenses. H2O2(aq) slowly decomposes at room temperature to make water and oxygen. The decomposition can be made faster by • using a more concentrated solution of H2O2(aq), …
Question 3Stoichiometry · 8 marks
For Examiner’s Use A3 Analysis of a compound Z obtained from the planet Mars showed Z has the following composition. element percentage by mass potassium 39.4 iron 28.3 oxygen 32.3 (a) Show that the empirical formula of Z is K2FeO4. …
Question 4Atoms, elements and compounds · 7 marks
For Examiner’s Use A4 Magnesium bromide and sodium oxide are both ionic compounds. (a) Complete the following table. ion number of atomic number mass number protons neutrons electrons Mg2+ 12 12 Br …
Question 5Metals · 14 marks
For Examiner’s Use A5 Mobile phones are made from a large number of different substances. The table shows the composition of a typical mobile phone. substance percentage, by mass, of a typical mobile phone plastics 56 ceramics 16 copper 15 …
Question 6Organic chemistry · 10 marks
B6 Paraffin (kerosene) is a mixture of hydrocarbons. It is used as a fuel for the jet engines of an aircraft. (a) Paraffin is separated from crude oil using fractional distillation. What property of paraffin is used to separate it …
Question 7Organic chemistry · 10 marks
For Examiner’s Use B7 Alkynes are a homologous series of organic compounds. Alkynes contain the C C group. They react in a similar way to alkenes. The table shows some information about the first five alkynes. alkyne molecular formula boiling …
Question 8Chemical reactions · 10 marks
For Examiner’s Use B8 One of the reactions in the manufacture of nitric acid involves the oxidation of ammonia. This reaction is exothermic. 4NH3(g) + 5O2(g) 4NO(g) …
Question 9Chemistry of the environment · 10 marks
For Examiner’s Use B9 There is much international concern that an increase in the atmospheric concentrations of methane and carbon dioxide can lead to global warming. The table shows the atmospheric concentration of methane and carbon dioxide over the last …

Other Chemistry papers from May/June 2010

Questions students ask

Where can I get the 5070/21 May/June 2010 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (5070_s10_ms_21), and on a wide screen it sits beside the question you are reading.

Which topics came up in 5070/21 May/June 2010?

Mostly Chemical reactions, Organic chemistry, Metals. The full list is in the table above.

Do I need an account to open 5070/21 May/June 2010?

No. Every paper opens for free without signing in. A free account also saves your pen marks and records your score against the grade thresholds.