Chemistry 5070/21 — October/November 2021
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
10
questions
75
marks
90
minutes
Topics Chemical Reactions · Stoichiometry · Atoms, Elements and Compounds · The Periodic Table · Metals · Chemistry of the Environment · +6 more
Q15MAtoms, Elements and CompoundsThe Periodic TableMetalsChemistry of the EnvironmentFree sample
Choose from the following oxides to answer the questions.
aluminium oxide
calcium oxide
iron(II) oxide
magnesium oxide
silicon dioxide
sodium oxide
sulfur dioxide
Each oxide may be used once, more than once or not at all.
State which oxide:
(a)1M
has a simple molecular structure
______
(b)1M
is a coloured solid
______
(c)1M
contains ions with a 3+ charge
______
(d)1M
is a product of the thermal decomposition of calcium carbonate
______
(e)1M
contributes to acid rain.
______
The rest of this paper
9 more questions- Q2Chemistry of the Environment · Acids, Bases and Salts · Experimental Techniques and Chemical Analysis · Chemical Reactions10M
- Q3Chemical Reactions · Stoichiometry11M
- Q4Organic Chemistry · Stoichiometry7M
- Q5Chemical Reactions · Chemical Energetics · Experimental Techniques and Chemical Analysis · Atoms, Elements and Compounds · Metals7M
- Q6Chemical Energetics · The Periodic Table · Stoichiometry5M
- Q7The Periodic Table · Metals · Atoms, Elements and Compounds · Chemical Reactions · Chemical Energetics10M
- Q8Organic Chemistry · Acids, Bases and Salts10M
- Q9Chemical Reactions · Stoichiometry · Electrochemistry · Experimental Techniques and Chemical Analysis · Chemistry of the Environment10M
- Q10The Periodic Table · States of Matter · Atoms, Elements and Compounds · Stoichiometry10M
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