Chemistry 5070 · O Level · Elements, compounds and mixtures
Elements, compounds and mixtures — practice question
Select answers from the compounds listed below for these questions.
aluminium sulfate
ammonia
calcium carbonate
carbon dioxide
chlorofluorocarbons
copper(II) sulfate
hydrogen chloride
potassium nitrate
sodium chloride
A compound may be chosen once, more than once, or not used at all.
(a)[1]
Which compound is a gas that dissolves in water to make an alkaline solution?
(b)[1]
Which compound is an anhydrous solid used to test for water?
(c)[1]
Which compound contains ions carrying a $3+$ charge?
(d)[1]
Which compound is a solid used in flue gas desulfurisation?
(e)[1]
Which compound is responsible for eutrophication?
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “ammonia” …