chemistry mock revision 0.0 / 5 ? ChemistryallA2/A-levelAQA Created by: Lucybarrow444Created on: 10-01-20 12:09 what is a free radical an atom or group with an unpaired electron 1 of 18 what is a nucleophile electron pair donor 2 of 18 what is an electrophile substance which can accept a pair of electron 3 of 18 what is a carbocation a species which contains a positive charge on a carbon atom 4 of 18 what is an addition reaction which two molecule join together to make one larger molecule 5 of 18 elimination where a small molecule is removed from a reactant molecule 6 of 18 substitution an atom or group of atoms is replaced by another atom or group of atoms 7 of 18 initiation step of the ozone decomposition RCF2Cl-(UV light)-> RCF2* + Cl* 8 of 18 1st propagation step of ozone decomposition Cl* +O3 -> ClO* + O2 9 of 18 2nd propagation step of ozone decomposition ClO* + O3 -> 2O2 +Cl* 10 of 18 test for primary and secondary alcohols add acidified potassium dichromate (VI)- Orange to green 11 of 18 test of all alcohols mix with carboxylic acid- smelly (produces esters are smelly used for perfumes) 12 of 18 test for aldehydes tollens test- silver mirror 13 of 18 test for aldehydes fehlings test- blue to brick red 14 of 18 what are the conditions need for fermentations yeast, 25C-45C, anaerobic, neutral aqueoues solution 15 of 18 what is the equation of fermentation glucose -> ethanol + carbon dioxide 16 of 18 what is the conditions for hydration of ethene conc. Phosphoric acid , 60 atm pressure, 600 K temp, excess Ethane 17 of 18 what is special about the finger print region unique to the molecule 18 of 18
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