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WorksheetsIGCSE MC Review
Total questions: 50
Worksheet time: 50mins
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Which statement describes a compound?
It contains two or more elements chemically combined.
It contains two or more elements physically combined.
It contains two or more elements forming an alloy.
It contains two or more elements that can easily be separated.
Which statement about elements in the Periodic Table is correct?
A potassium ion, K+ , has the same electronic configuration as a chloride ion, Cl−
The electronic configuration of a Ca+2 ion is 2,8,8,2.
The halogens are in Group VI and so their atoms have six electrons in their outer shell
Magnesium is in Period 3 and so a magnesium ion, Mg+2 , has three occupied electron shells.
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Which statement about graphite explains why it is used as an electrode?
It contains ions.
It has a giant covalent structure.
It is a metal.
It has mobile electrons.
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Which gases are used to generate electricity in a fuel cell?
carbon dioxide and oxygen
hydrogen and methane
hydrogen and oxygen
methane and carbon dioxide
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Which description of brass is correct?
a compound of copper and zinc
a compound of copper and tin
a mixture of copper and zinc
a mixture of copper and tin
What is the symbol of the metal used in the manufacture of aircraft because of its low density?
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Cu
Fe
Zn
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One mole of alkane Y produces 72 dm3 of carbondioxide when burned in excess oxygen, measured at room temperature and pressure. What is Y?
butane
ethane
methane
propane
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