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WorksheetsIGCSE Coordinated Chemistry Workout 3
Total questions: 10
Worksheet time: 10mins
The diagram shows a sack containing a mixture of three minerals. Which element is not present in the mixture?
Cobalt
Copper
Iron
Tin
Heating a metal compound in a Bunsen flame turns the flame green. Which metal ion is present in the compound?
Calcium
Copper
Potassium
Sodium
Which process produces molecules with longer chains?
combustion of hydrocarbon
cracking
fractional distillation of crude oil
polymerisation
The diagram shows part of a polymer molecule.
A
B
C
D
The table shows the name and formula of four metal ores. Which metal ores contain two different metals?
1 and 3 only
2 and 4 only
1, 2 and 4 only
2, 3 and 4 only
Compound X is an important industrial raw material. Products obtained from the electrolysis of its concentrated aqueous solution include:
• a gas that bleaches damp litmus paper,
• a gas that ignites with a pop,
• an alkali.
What is compound X?
copper(II) sulphate
hydrochloric acid
sodium carbonate
sodium chloride
How may the compounds in chlorophyll be separated?
Filtration
Recrystallisation
Chromatography
Simple distillation
A fuel used for cooking food is the hydrocarbon …X… that burns in an …Y… reaction. Which words correctly complete gaps X and Y?
A
B
C
D
The table shows the results of adding three metals, X, Y and Z, to water and to dilute hydrochloric acid. What is the order of reactivity of the three metals? Most reactive first.
X > Y > Z
Y > X > Z
Y > Z > X
Z > Y > X
An element X has a high melting point and its oxide, X2O3, is coloured. How are X and X2O3 described?
A
B
C
D
