Rates of Reaction - Marble Chips/Hydrochloric Acid 0.0 / 5 ? Applied ScienceMarble chips and hydrochloric acidGCSEEdexcel Created by: A13Created on: 29-05-14 16:26 How does surface area affect the rate of reaction? The size of the particles means that they have more exposed sides. 1 of 6 What does a catalyst do? Speed up the reaction without being used up itself. 2 of 6 How does temperature affect the rate of reaction? It speeds up the movement of the particles. 3 of 6 What is concentration? The amount of dissolved reactant. 4 of 6 Catalysts work by... Lowering the activation energy/temperature needed for the reaction. 5 of 6 The collision theory is... When molecules collide the bonds between their atoms break and new bonds can form to make new molecules 6 of 6
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