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© Pearson Education Ltd 2011. Copyright permitted for purchasing institution only. This material is not copyright free. Changes to the AQA Chemistry GCSE specification for 2011* Chemistr y Science - Chemistry 1 Atomic structure, properties and bonding Electronic structure of atoms and the periodic table (was C2). Elements and compounds. Metals. Charges on protons, neutron and electrons (was C2). Introduction to periodic table group properties. 2011 Changing materials and chemical reactions Obtaining and using materials Conservation of mass. Combustion. Reactivity of metals. Reaction of carbonates. Representing reactions. Cracking hydrocarbons. Polymerisation of alkenes. Limestone, concrete and cement. Rocks and metals: iron, steel, alloys, copper, aluminium and titanium. 1 Recycling. Crude oil and fuels. Removed Additional Science – Chemistry 2 Extension Science – Chemistry 3 2011 2011 Removed Electronic structure of transition metals. Covalent, ionic and metallic bonding. Periodic table and its development. Relating properties to structure. Group 1 and Group 7. Transition elements. Introduction to Group 1 and Group 7. Allotropes of carbon including fullerenes (new). Alloys in relation to the effect of different sized atoms (was C1). Reactions conditions and polymer properties (was C1). Effects of changing conditions on equilibria (was C2). Food, fuel and energy changes (quantitative). Use of food additives Removed Atom economy. Reactions of alcohols and carboxylic acids. Developing new materials, e.g. nanoscience, smart alloys (was C1). Thermo-softening and thermo-setting polymers (new). Distinction between temporary and permanent hard water. Hydrogen as a fuel. Alcohols, carboxylic acids and esters. Haber process (was Reversible reactions. Equilibria. Rates of reaction. Catalysts. Energy changes. Salts and solutions. Acids and bases. Electroplating (new). Acid-base theory. Strengths of acids and alkalis. Titrations involving weak acids or weak alkalis. © Pearson Education Ltd 2011. Copyright permitted for purchasing institution only. This material is not copyright free. Phytomining, bioleaching (new). Extraction of aluminium (was C1). Biodegradable polymers (new). Electrolysis of sodium chloride. Plant oils and emulsions. Hydrophobic and hydrophilic properties of emulsifiers (new). Distillation (crude oil, plant oils and air). Biofuels (new). Using vegetable oils in cooking (new). Earth and environme ntal science Earth and its atmosphere. Early atmosphere. Absorption of carbon dioxide by the oceans (new). Chemical detection 2 *Subject to Ofqual accreditation. Chemical calculation s Reaction of carbonates with acid and the use of limewater to detect carbon dioxide (was C3). Conservation of mass. Uses of noble gases. Instrumental methods for chemical analysis (gas chromatography and mass spectrometry) (was C3). C2.) Water for drinking. Water treatment. Hard water. Fluoride in drinking water. Chemical analysis including tests for ions. Chemical analysis for additives in food (was C1). Relative atomic/formula masses, moles. Reacting masses from chemical equations, percentage yield, atom economy. Water cycle. Tests for ammonium and nitrate ions. Identificati on of organic compounds Energy changes. Titrations. Solubility of solutes and gases.