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QWC - Bubbles Level 1 – 1 to 2 marks Level 2 – 3 to 4 marks Level 3 - 5to 6 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Detailed answer Many key words Clear order Good spelling, punctuation and grammar Simple answer Few key words No order Poor spelling, punctuation and grammar Explain the term neutralisation, include a word equation for the reaction between sodium hydroxide and sulphuric acid. 6 marks Hints Write a word equation. Explain which ions are present in an acidic solution Explain which ions are present in an alkaline solution Key words Hydroxide Hydrogen Ions Neutralise Acid Alkali Aqueous Explain the products produced _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ Name the salt when you have the following acids and alkali/bases. Consider the other products which could be made too. Acid Alkali/Base Salt Hydrochloric Sodium acid hydroxide Sulphuric acid Potassium hydroxide Nitric Acid Calcium hydroxide Tartaric Acid Aluminium oxide Ethanoic acid Copper oxide Citric acid Sodium carbonate Complete the following generic equations. Acid + Alkali Acid + metal hydroxide Acid + carbonate Other products Write balanced symbol equations for the following reactions. Sulphuric acid + copper oxide Nitric acid + magnesium oxide Sulphuric acid + sodium hydroxide Sulphuric acid + calcium carbonate Nitric acid + magnesium carbonate Hydrochloric acid + lead oxide Nitric acid + copper hydroxide QWC - Bubbles Level 1 – 1 to 2 marks Level 2 – 3 to 4 marks Level 3 - 5to 6 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Detailed answer Many key words Clear order Good spelling, punctuation and grammar Simple answer Few key words No order Poor spelling, punctuation and grammar The chemical industry is a very important industry. There are some key stages in chemical synthesis. Explain the main stages in chemical synthesis. 6 marks Hints List the different stages of the chemical industry Explain how temperature, pressure and catalysts are used in industry Explain why the products are tested for purity Explain why risks have to be reduced during the synthesis Key words Reaction Risk Hazards Quantities Reactants Cost Apparatus Conditions Size Temperature Pressure Catalyst Isolation Purification Yield purity ______________________________________ ______________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ QWC - Bubbles Level 1 – 1 to 2 marks Level 2 – 3 to 4 marks Level 3 - 5to 6 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Detailed answer Many key words Clear order Good spelling, punctuation and grammar Simple answer Few key words No order Poor spelling, punctuation and grammar Chemical are produced on an industrial scale. It is really important to control the rate of reactions. Discuss factors which can affect the rate of reaction. Consider the collision theory in your answer. 6 marks Key words Concentration Surface Area Temperature Catalysts Collision Theory Particles Hints List the factors that affect the rate of reaction Explain how each factor can change the rate of reaction Explain what collision theory is and link this to the different factors Explain why not all collisions of particles cause a reaction _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ QWC - Bubbles Level 1 – 1 to 2 marks Level 2 – 3 to 4 marks Level 3 - 5to 6 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Detailed answer Many key words Clear order Good spelling, punctuation and grammar Simple answer Few key words No order Poor spelling, punctuation and grammar Discuss the differences between and exothermic and an endothermic reaction. Use energy level diagrams if you wish to support your explanation. 6 marks Key words Energy levels Heat transfer Absorption Release Hints Explain what would be observed in exothermic and endothermic reactions Use energy level diagrams to explain the change of energy for both Explain what each term – exothermic/endo thermic mean Use examples of reactions to support your explanation _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ QWC - Bubbles Explain the difference between the two lines on the graph. What factors have been altered which resulted in this difference? 6 marks Level 1 – 1 to 2 marks Level 2 – 3 to 4 marks Level 3 - 5to 6 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Detailed answer Many key words Clear order Good spelling, punctuation and grammar Simple answer Few key words No order Poor spelling, punctuation and grammar Key words Rates of Reaction Concentration Surface Area Temperature Catalysts Collision Theory Hints Describe the 2 lines of best fit on the graph (use the axis to explain) Use the factors that affect a rate of reaction to explain each line Explain why both reactions eventually reach the same end point Explain why not all collisions of particles cause a reaction _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________