C1.1.4 use data to predict states of C2 Structure, bonding 68 substances under given conditions and the properties of matter C1.1.5 interpret evidence for how it is C9 The atmosphere 296 thought the atmosphere was originally formed C1.1.6 describe how it is thought an C9 The atmosphere 298 oxygen-rich atmosphere developed over time C1.1.7 describe the major sources of C9 The atmosphere 312 carbon monoxide and particulates (incomplete combustion), sulfur dioxide (combustion of sulfur impurities in fuels), oxides of nitrogen (oxidation of nitrogen at high temperatures and further oxidation in the air) C1.1.8 explain the problems caused by C9 The atmosphere 314 increased amounts of these substances and describe approaches to decreasing the emissions of these substances into the atmosphere including the use of catalytic converters, low sulfur petrol and gas scrubbers to decrease emissions C1.1.9 use chemical symbols to write the C1 Atomic structure 14 formulae of elements and simple covalent and the periodic table compounds C1.1.10 use the names and symbols of C3 Chemical 98 common elements and compounds and quantities and the principle of conservation of mass to calculations write formulae and balanced chemical equations C1.1.11 use arithmetic computations and C9 The atmosphere 316 ratios when balancing equations C1.1.12 describe tests to identify oxygen, C8 Chemical Analysis 272 hydrogen and carbon dioxide C1.1.13 explain oxidation in terms of gain C4 Chemical 132 of oxygen Changes C1.2 Why are there temperature changes in chemical reactions? C1.2.1 distinguish between endothermic C5 Energy Changes 178 and exothermic reactions on the basis of the temperature change of the surroundings C1.2.2 draw and label a reaction profile for C5 Energy Changes 178 an exothermic and an endothermic reaction, identifying activation energy C1.2.3 explain activation energy as the C5 Energy Changes 178 energy needed for a reaction to occur
C1.1.4 use data to predict states of substances under given conditions C2 Structure, bonding and the properties of matter 68 C1.1.5 interpret evidence for how it is thought the atmosphere was originally formed C9 The atmosphere 296 C1.1.6 describe how it is thought an oxygen-rich atmosphere developed over time C9 The atmosphere 298 C1.1.7 describe the major sources of carbon monoxide and particulates (incomplete combustion), sulfur dioxide (combustion of sulfur impurities in fuels), oxides of nitrogen (oxidation of nitrogen at high temperatures and further oxidation in the air) C9 The atmosphere 312 C1.1.8 explain the problems caused by increased amounts of these substances and describe approaches to decreasing the emissions of these substances into the atmosphere including the use of catalytic converters, low sulfur petrol and gas scrubbers to decrease emissions C9 The atmosphere 314 C1.1.9 use chemical symbols to write the formulae of elements and simple covalent compounds C1 Atomic structure and the periodic table 14 C1.1.10 use the names and symbols of common elements and compounds and the principle of conservation of mass to write formulae and balanced chemical equations C3 Chemical quantities and calculations 98 C1.1.11 use arithmetic computations and ratios when balancing equations C9 The atmosphere 316 C1.1.12 describe tests to identify oxygen, hydrogen and carbon dioxide C8 Chemical Analysis 272 C1.1.13 explain oxidation in terms of gain of oxygen C4 Chemical Changes 132 C1.2 Why are there temperature changes in chemical reactions? C1.2.1 distinguish between endothermic and exothermic reactions on the basis of the temperature change of the surroundings C5 Energy Changes 178 C1.2.2 draw and label a reaction profile for an exothermic and an endothermic reaction, identifying activation energy C5 Energy Changes 178 C1.2.3 explain activation energy as the energy needed for a reaction to occur C5 Energy Changes 178
470139-switching-to-ocr-gcse-9-1-chemistry-b-from-aqa.docx