Chemistry 5070/21 — October/November 2023
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Stoichiometry · Chemical Reactions · Atoms, Elements and Compounds · Chemistry of the Environment · Experimental Techniques and Chemical Analysis · States of Matter · +5 more
Choose from the list of compounds to answer these questions.
calcium oxide
carbon dioxide
carbon monoxide
lead chloride
propan-1-ol
sodium nitrate
sodium sulfate
sulfur dioxide
water
Each compound may be used once, more than once or not at all.
Identify the compound that:
is a toxic gas produced by the incomplete combustion of carbon-containing compounds
______
turns anhydrous copper(II) sulfate blue
______
leads to deoxygenation of water in rivers
______
in aqueous solution, gives a white precipitate on addition of acidified aqueous barium chloride
______
contains an anion with a charge of –1.
______
The rest of this paper
8 more questions- Q2Metals · Atoms, Elements and Compounds · Stoichiometry · Chemical Reactions13M
- Q3Stoichiometry · Chemical Reactions · States of Matter8M
- Q4Electrochemistry · Experimental Techniques and Chemical Analysis · Chemical Reactions · Atoms, Elements and Compounds10M
- Q5Organic Chemistry · Stoichiometry · States of Matter10M
- Q6Chemistry of the Environment · Chemical Reactions · Chemical Energetics · Acids, Bases and Salts · Experimental Techniques and Chemical Analysis7M
- Q7Stoichiometry · Acids, Bases and Salts · Chemistry of the Environment11M
- Q8Chemical Reactions · Organic Chemistry7M
- Q9Atoms, Elements and Compounds · Stoichiometry9M