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Your mum
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I m doing an experiment between acids and marble chips there are many different ways to do this type of experiment Reaction rate is affected by these four things: The collision theory relates molecule collisions to reaction rate. According to this theory, reacting molecules must collide with sufficient energy if they are to form products · Surface area: when one of the reactants is a solid, the reaction can only take place at the surface of the solid. Breaking the solid into smaller pieces will increase the surface area exposed to the other reactant. This should increases the reaction rate. · Temperature: since temperature is a measure of the motion of particels, increasing the temperature will cause the particles to move faster. When particles move faster, more collisions occur and the collisions are more violent. This should increase the reaction rate. · Catalysts: catalysts are substances that change the rate of a chemical reaction without being changed in the reaction. Catalysts are most often used to speed up a chemical reaction. They do this by changing the steps needed between the reactants and the formation of the products. If the number of steps can be reduced, the reaction rate should increase. There are 2 types of reactions: Exothermic reaction - a reaction that releases energy. The reactants have more energy than the products. Energy must be released as the products form. The container in which an exothermic reaction is taking place will feel hot.
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