Chemistry 5070/21 — October/November 2019
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
9
questions
75
marks
90
minutes
Topics Stoichiometry · Experimental Techniques and Chemical Analysis · Atoms, Elements and Compounds · Acids, Bases and Salts · Chemical Reactions · Chemistry of the Environment · +6 more
Q15MThe Periodic TableMetalsExperimental Techniques and Chemical AnalysisAtoms, Elements and CompoundsFree sample
The diagram shows part of the Periodic Table.
Answer the questions using only the elements shown in the diagram.
Each element may be used once, more than once or not at all.
Write the symbol for an element which:
(a)1M
forms a stable ion by gaining three electrons
______
(b)1M
is extracted from haematite
______
(c)1M
forms an ion which gives a red-brown precipitate on addition of aqueous ammonia
______
(d)1M
has chemical properties similar to those of calcium
______
(e)1M
can have lubricating properties.
______
The rest of this paper
8 more questions- Q2Metals · Atoms, Elements and Compounds · Stoichiometry · Electrochemistry · Experimental Techniques and Chemical Analysis13M
- Q3Experimental Techniques and Chemical Analysis · Stoichiometry6M
- Q4Experimental Techniques and Chemical Analysis · Acids, Bases and Salts · Chemical Reactions · Chemistry of the Environment13M
- Q5The Periodic Table · Chemistry of the Environment · Chemical Reactions · Stoichiometry · Acids, Bases and Salts8M
- Q6Acids, Bases and Salts · States of Matter · Stoichiometry · Organic Chemistry10M
- Q7Chemical Reactions · Chemical Energetics · Stoichiometry · Chemistry of the Environment10M
- Q8Atoms, Elements and Compounds · Stoichiometry · Organic Chemistry10M
- Q9Organic Chemistry10M
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