Increasing the concentration surface area to volume of reactants in solution, the ratio. pressure of reacting gases, and the surface area of solid Use simple ideas about reactants increases the proportionality when frequency of collisions and using collision theory to so increases the rate of explain the effect of a reaction. factor on the rate of a reaction. Increasing the temperature increases the frequency of WS 1.2 collisions and makes the collisions more energetic, MS 1c, 5c and so increases the rate of reaction. 5.6.1.4 Catalysts change the rate of Be able to identify 1 Define the term activation Research different catalysts Video clip chemical reactions but are catalysts in reactions energy. and uses in industry. not used up during the from their effect on the YouTube: reaction. Different reactions rate of reaction and Identify advantages of Research catalytic need different catalysts. because they are not using catalysts in industrial converters. Enzymes act as catalysts in included in the chemical reactions eg reducing biological systems. equation for the costs. An opportunity to investigate reaction. the catalytic effect of adding Catalysts increase the rate of Be able to explain Explain the effect of using a different salts to a reaction by providing a catalytic action in terms catalyst on the activation reaction such as the different pathway for the of activation energy. energy. decomposition of hydrogen reaction that has peroxide. activation energy. Students do not need to know the names of AT 5 catalysts other than
Increasing the concentration of reactants in solution, the pressure of reacting gases, and the surface area of solid reactants increases the frequency of collisions and so increases the rate of reaction. Increasing the temperature increases the frequency of collisions and makes the collisions more energetic, and so increases the rate of reaction. surface area to volume ratio. Use simple ideas about proportionality when using collision theory to explain the effect of a factor on the rate of a reaction. WS 1.2 MS 1c, 5c 5.6.1.4 Catalysts change the rate of chemical reactions but are not used up during the reaction. Different reactions need different catalysts. Enzymes act as catalysts in biological systems. Catalysts increase the rate of reaction by providing a different pathway for the reaction that has activation energy. Be able to identify catalysts in reactions from their effect on the rate of reaction and because they are not included in the chemical equation for the reaction. Be able to explain catalytic action in terms of activation energy. Students do not need to know the names of catalysts other than 1 Define the term activation energy. Identify advantages of using catalysts in industrial reactions eg reducing costs. Explain the effect of using a catalyst on the activation energy. Research different catalysts and uses in industry. Research catalytic converters. An opportunity to investigate the catalytic effect of adding different salts to a reaction such as the decomposition of hydrogen peroxide. AT 5 Video clip YouTube:
AQA-8464-SOW-RATE.DOCX