Chemistry 5070/21 — May/June 2010
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Stoichiometry · Chemical Reactions · Atoms, Elements and Compounds · Organic Chemistry · Experimental Techniques and Chemical Analysis · Electrochemistry · +5 more
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
is a catalyst in the hydrogenation of unsaturated vegetable oils to make margarine,
______
has an ion which, in solution, reacts with aqueous sodium hydroxide to give a white precipitate that redissolves in excess sodium hydroxide,
______
has six electrons in its outer shell,
______
is formed during the electrolysis of dilute sulfuric acid using inert electrodes,
______
will displace bromine from aqueous calcium bromide,
______
is above magnesium in the reactivity series.
______
The rest of this paper
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- Q3Stoichiometry · Chemical Reactions8M
- Q4Atoms, Elements and Compounds7M
- Q5Organic Chemistry · Metals · Electrochemistry · Atoms, Elements and Compounds14M
- Q6Organic Chemistry · Stoichiometry · Chemical Reactions10M
- Q7Organic Chemistry · Chemical Energetics · Stoichiometry10M
- Q8Chemical Reactions · Stoichiometry · Acids, Bases and Salts10M
- Q9Chemistry of the Environment · Atoms, Elements and Compounds · Stoichiometry · Organic Chemistry10M