Chemistry 5070 · O Level · Solids, liquids and gases
Solids, liquids and gases — practice question
Use the gases in the list below to answer the questions.
ammonia
carbon dioxide
chlorine
butane
hydrogen
nitrogen
oxygen
propane
sulfur dioxide
You may use each gas once, more than once, or not at all.
Which gas fits each description:
(a)[1]
reacts in air to produce only water
(b)[1]
is added to kill bacteria during the purification of water for domestic use
(c)[1]
contains a molecule with 11 atoms altogether
(d)[1]
makes up 78% by volume of dry air
(e)[1]
is given off when calcium hydroxide is added to soil containing the fertiliser ammonium nitrate?
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “hydrogen (\text{H}_2)” …