Energy Changes pt.2 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: 3mily05Created on: 24-09-19 16:58 What is a Simple Cell? Made from connecting two different metals (different reactivity) in contact with an electrolyte. 1 of 11 What is a Battery? Two or more simple cells joined together in series to make a greater voltage. 2 of 11 What is a Non-Rechargeable Cell? Type of cell where the reactions stop when one of the reactants is used up. E.g Alkali batteries 3 of 11 What is a Rechargeable Cell? Type of cell where the chemical reactions can be reversed when an electric current is supplied. 4 of 11 What are Factors Affecting Voltage? Electrolyte used, different in reactivity of two metals. 5 of 11 What is a Fuel Cell? Type of cell that makes electricity from reacting a fuel (eg Hydrogen) with oxygen. 6 of 11 What is the Overall Equation? 2h2+o2 2h2o 7 of 11 What is the Anode Equation? 4H+(aq) + O2(g) + 4e– → 2H2O(g) 8 of 11 What is the Cathode Equation? H2(g) – 2e– → 2H+(aq) 9 of 11 Hydrogen Fuel Cell: ... 10 of 11 Cells and Batteries: ... 11 of 11
Physics: Unit 1.3 and 4: Methods we use to generate electricity and the usefulness of electrical appliances 0.0 / 5
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