Chemistry 5070/22 — October/November 2015
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Stoichiometry · Chemical Reactions · Acids, Bases and Salts · Atoms, Elements and Compounds · The Periodic Table · Chemistry of the Environment · +6 more
Choose from the following elements to answer the questions below.
aluminium
argon
carbon
copper
iodine
iron
lead
magnesium
nitrogen
oxygen
sulfur
Each of these elements can be used once, more than once or not at all.
Which element
has an ion which, in aqueous solution, reacts with aqueous sodium hydroxide to give a red-brown precipitate,
______
has an atom with an electronic configuration with only five occupied electron shells,
______
has an oxide which decolourises acidified potassium manganate(VII),
______
has a sulfate which is insoluble in water,
______
provides an inert atmosphere for the extraction of reactive metals,
______
produces ammonia when it is warmed with an aqueous mixture of sodium nitrate and sodium hydroxide?
______
The rest of this paper
9 more questions- Q2Chemistry of the Environment · Organic Chemistry · Acids, Bases and Salts · Stoichiometry11M
- Q3Chemistry of the Environment · Stoichiometry · Acids, Bases and Salts6M
- Q4Stoichiometry · Metals · Electrochemistry · Chemical Reactions10M
- Q5States of Matter5M
- Q6Chemical Energetics · Stoichiometry · Acids, Bases and Salts · Chemical Reactions7M
- Q7Atoms, Elements and Compounds · Stoichiometry · Electrochemistry10M
- Q8Stoichiometry · The Periodic Table · Atoms, Elements and Compounds10M
- Q9Organic Chemistry · States of Matter · Stoichiometry10M
- Q10Chemical Reactions · Chemical Energetics · Stoichiometry10M