OCR AS Chemistry Unit 1 A quiz I have made from my revision notes for the May 2012 exams. Hope this helps! 4.0 / 5 based on 11 ratings ? ChemistryASAll boards Created by: Ollie11Created on: 12-05-12 10:21 Define Relative Atomic Mass The mean mass of an atom compared to 1/12 the mass of a carbon 12 atom 1 of 8 What is the structure and bond angle in Methane (CH4) Tetrahedral 109.5 2 of 8 What is the electron configuration of Fe3+? 1s2 2s2 2p6 3s2 3p6 4s2 3d3 3 of 8 When testing for a halide, silver nitrate goes 'creamy' with: Bromine ions 4 of 8 What is a disproportionation reaction? An element is oxidised and reduced at the same time 5 of 8 What is the charge on a phosphate ion -3 6 of 8 What is the formula for working out Mass (g) ? Moles x Relative Atomic Mas 7 of 8 What is Avogadro's constant? 6.02 x 10^23 8 of 8
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