GCSE Chemistry Specification

OCR B J258

Section C2.4: How are equations used to represent chemical reactions?

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#C2.4.1

use chemical symbols to write the formulae of elements and simple covalent and ionic compounds

#C2.4.2

use the formulae of common ions to deduce the formula of Group 1 and Group 7 compounds

#C2.4.3

use the names and symbols of the first 20 elements, Groups 1, 7 and 0 and other common elements from a supplied Periodic Table to write formulae and balanced chemical equations where appropriate

#C2.4.4

describe the physical states of products and reactants using state symbols (s, l, g and aq)