and the surface area of solid temperature, Predict and explain the effects YouTube: reactants increases the concentration and of changing conditions on the frequency of collisions and pressure in terms of rate of a reaction. so increases the rate of frequency and energy reaction. of collision between particles. Increasing the temperature increases the frequency of collisions and the collisions more energetic, and so increases the rate of reaction. 4.7.4.4 Chemical reactions can Explain activation 1 Define the term activation Demo, and occur only when reacting energy as the energy energy. appropriate practically particles collide with each needed for a reaction investigate, the Draw reaction profiles for other and with sufficient to occur. reactivity of some exothermic and endothermic. energy. The minimum metals with water and Draw simple reaction Explain what the diagrams amount of energy that acid. profiles (energy display. particles must have to react diagrams) for Use YouTube clips or let WS 3.2, 3.5, MS 4a is called the activation exothermic and students investigate the energy. Reaction profiles can Use reaction profiles to identify endothermic reactions reactivity of some other be used to show the relative reactions as exothermic or showing the relative combinations. energies of reactants and endothermic. energies of reactants products, the activation
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 the collisions more energetic, and so increases the rate of reaction. temperature, concentration and pressure in terms of frequency and energy of collision between particles. Predict and explain the effects of changing conditions on the rate of a reaction. YouTube: 4.7.4.4 Chemical reactions can occur only when reacting particles collide with each other and with sufficient energy. The minimum amount of energy that particles must have to react is called the activation energy. Reaction profiles can be used to show the relative energies of reactants and products, the activation Explain activation energy as the energy needed for a reaction to occur. Draw simple reaction profiles (energy diagrams) for exothermic and endothermic reactions showing the relative energies of reactants 1 Define the term activation energy. Draw reaction profiles for exothermic and endothermic. Explain what the diagrams display. WS 3.2, 3.5, MS 4a Use reaction profiles to identify reactions as exothermic or endothermic. Demo, and appropriate practically investigate, the reactivity of some metals with water and acid. Use YouTube clips or let students investigate the reactivity of some other combinations.
AQA-8465-SOW-MAI.DOCX