rate of reaction 0.0 / 5 ? Sciencerate of reaction and collision theroryGCSEAQA Created by: IzzyhuberyCreated on: 26-11-16 21:42 increasing the concentration of a solution means? the rate of reaction increases 1 of 17 concentration is used for a solid, liquid or a gas? liquid 2 of 17 pressure is used for a liquid, solid or a gas? gas 3 of 17 concentration means? more particles in a given volume 4 of 17 a lower concentration means particles are less likely to...? collide therefore a smaller rate of reaction 5 of 17 increasing the pressure/concentration means the f......... of c........ is increased, making faster reactions. frequency of collisions 6 of 17 increasing the temperature means? increase in rate of reaction 7 of 17 to make the particles collide more often with more energy you have to do what to the temperature? increase it 8 of 17 what does a catalyst do? lower the activation energy,less energy needed for a reaction. 9 of 17 T/F? reaction rate increases when a catalyst is used? TRUE 10 of 17 pressure means the particles are further apart so more collisions happen ? T/F? FALSE particles are pushed together so there is a greater chance of a successful collsion 11 of 17 why does the R of R increase when the particles are smaller? small particles have a bigger surface area than if there was the same number of big particles, 12 of 17 what is collision theory? The R of R depends on how often and how hard the reacting particles collide. 13 of 17 3 things that increase collisions? higher temperature, higher concentration/pressure, larger surface area. 14 of 17 catalysts produce more products faster . T/F? FALSE they produce the same amount or products just faster. 15 of 17 what is an exothermic reaction? a reaction is one which transfers energy to the surroundings, usually shown as a rise of temp 16 of 17 an endothermic reaction? takes energy from surroundings usually shown by a fall in temp 17 of 17
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