Chemistry 0620 · IGCSE · Elements, compounds and mixtures
Elements, compounds and mixtures — practice question
The compounds below are given.
ammonia
carbon dioxide
carbon monoxide
cobalt(II) chloride
ethane
ethene
glucose
methane
potassium sulfate
sodium phosphate
sulfur dioxide
Use only the compounds in the list to answer the questions that follow. A compound may be chosen once, more than once, or not used at all.
(a)[1]
State the name of the compound that is an unsaturated hydrocarbon.
(b)[1]
State the name of the compound that causes deoxygenation of river water.
(c)[1]
State the name of the compound that is a gas which turns damp red litmus paper blue.
(d)[1]
State the name of the compound that is the main constituent of natural gas.
(e)[1]
State the name of the compound that is a product of photosynthesis.
(f)[1]
State the name of the compound that is a compound of a transition element.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Ethene” …