CIE iGCSE Co-Ordinated Science C11.1 Formulas and terminology Exam Style Questions Paper 3
Question
Table 5.1 shows five compounds, A, B, C, D and E, and the formula of each compound.
(a) (i) State the compound from Table 5.1 that is an unsaturated hydrocarbon.
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(ii) Describe the chemical test that distinguishes between a saturated hydrocarbon and an
unsaturated hydrocarbon and state the results for each.
test ……………………………………………………………………………………………………………………
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result for a saturated hydrocarbon ………………………………………………………………………
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result for an unsaturated hydrocarbon …………………………………………………………………
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(b) (i) State the name of the two compounds from Table 5.1 that are possible products of the
combustion of compound E.
1 ……………………………………………………………………………………………………………………….
2 ……………………………………………………………………………………………………………………….
(ii) State the name of the compound made when compound D reacts with steam.
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(iii) State the name of the polymer made using compound D as a monomer.
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(iv) Draw the structure of compound E, C$_{2}$H$_{6}$.
(c) State the names of the two most common greenhouse gases from Table 5.1.
………………………………………………………… and …………………………………………………………
▶️Answer/Explanation
Ans: 5(a)(i) D ;
5(a)(ii) (aqueous) bromine ;
saturated – stays orange ;
unsaturated – goes colourless ;
5(b)(i) carbon monoxide ;
carbon dioxide ;
5(b)(ii) ethanol ;
5(b)(iii) poly(ethene) ;
5(b)(iv) C–C single bond ;
3 hydrogens each attached to a different carbon atom ;
5(c) carbon dioxide and methane ;