Chemistry (C1) 0.0 / 5 ? ChemistryC1GCSEOCR Created by: carolinelloydCreated on: 25-02-17 17:18 Why are fossil fuels described as finite resources? Because they are no longer being made (or very slowly). 1 of 18 What are difficulties associated with crude oil? All readily extractable resources will be used up in the future, finding replacements. 2 of 18 What are the fractions in the fractional distillation tower? LPG, Paraffin, Petrol, Diesel, Heating Oil, Fuel Oil, Bitumen 3 of 18 What happens during distillation? The intermolecular forces between molecules are broken. 4 of 18 What is cracking? Process that turns large alkane molecules into smaller alkene and alkane molecules. 5 of 18 What is the word equation for incomplete combustion? fuel + oxygen --- carbon (monoxide) + water 6 of 18 What is clean air made up of? 78% nitrogen, 21% oxygen and 1% other 7 of 18 What are alkenes? Hydrocarbons with double covalent bonds. Unsaturated. 8 of 18 What are alkanes? Hydrocarbons with single covalent bonds. Saturated. 9 of 18 What is addition polymerisation? Process in which many alkene monomers react to give a polymer. 10 of 18 What properties does Nylon and GORE-TEX have? Tough, lightweight, keeps water and UV light out. 11 of 18 What is the difference between Nylon and GORE-TEX? GORE-TEX is also breathable so can be worn being active outside. 12 of 18 What is the word equation for decomposition of sodium hydrocarbonate. sodium hydrocarbonate - sodium carbonate + carbon dioxide + water 13 of 18 What is the hydrophobic tail of an emulsifier? Oil-or-fat loving part. 14 of 18 What is the hydrophilic head of an emulsifier? Water-loving part. 15 of 18 Whats the word equation for the reaction to make an 'ester'? alcohol + acid - ester + water 16 of 18 What is a solution? A mixture of solvent and solute. 17 of 18 Why will water not dissolve nail varnish colour? The attraction between the water molecules is stronger than the attraction between the water and the nail varnish molecules. 18 of 18
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