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5070/22

Chemistry 5070/22 — May/June 2019

Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme

10
questions
75
marks
90
minutes

Topics Atoms, Elements and Compounds · Stoichiometry · Chemical Reactions · Acids, Bases and Salts · Organic Chemistry · Chemistry of the Environment · +5 more

Q13MAtoms, Elements and CompoundsChemical ReactionsFree sample

Choose from the particles shown to answer the questions.

CH4Cl−Fe2+H+H2SMnO4−NH4+P3−\text{CH}_4 \qquad \text{Cl}^- \qquad \text{Fe}^{2+} \qquad \text{H}^+ \qquad \text{H}_2\text{S} \qquad \text{MnO}_4^- \qquad \text{NH}_4^+ \qquad \text{P}^{3-}

Each particle can be used once, more than once or not at all.

(a)

Which particle has only eighteen protons?

______

1M
(b)

Which particle is used to test for a reducing agent?

______

1M
(c)

Which particle is an ion that contains only ten electrons?

______

1M

The rest of this paper

9 more questions
  • Q2The Periodic Table · Atoms, Elements and Compounds · Metals · Electrochemistry · Chemical Reactions · Acids, Bases and Salts14M
  • Q3Metals · Atoms, Elements and Compounds · Stoichiometry7M
  • Q4Organic Chemistry · Chemistry of the Environment8M
  • Q5Stoichiometry7M
  • Q6Chemistry of the Environment6M
  • Q7Chemical Reactions · Stoichiometry · Experimental Techniques and Chemical Analysis · The Periodic Table · Atoms, Elements and Compounds10M
  • Q8Chemical Reactions · Atoms, Elements and Compounds · Stoichiometry · Acids, Bases and Salts10M
  • Q9Organic Chemistry · Stoichiometry · Chemistry of the Environment · States of Matter · Atoms, Elements and Compounds10M
  • Q10Organic Chemistry · Acids, Bases and Salts · Stoichiometry10M
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