lesson 3 by Helena Benavides Vindas https://padlet.com/hbenavides/5ny83y1admod chapter 5 en-us 2017-11-10 19:53:14 UTC 2017-11-12 22:41:42 UTC hello@padlet.com What affects the Rate of a Chemical Reaction? hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205816732 Factors that affect rates of reactions include surface area, temperature,concentration, and the presence of catalysts and inhibitors.]]> 2017-11-10 19:59:26 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205816732 Surface Area hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205817765 Is when a piece of solid substance reacts with a liquid or gas, only the particles on the surface of a solid come into contact with the other reactant]]> 2017-11-10 20:02:48 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205817765 Concentration hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205819389 Concentration is the amount of a substance in a given volume.]]> 2017-11-10 20:08:09 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205819389 Temperature hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205820111 Changing the temperature of a chemical reaction affects the reaction rate. When you heat a substance, its particles move faster. Faster-moving particles have more energy which helps reactants get over the activation barrier more quickly.]]> 2017-11-10 20:11:10 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205820111 Catalysts and Inhibitors hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205821633 A catalyst increases the reaction rate by lowering the activation energy needed. An inhibitor is a material used to decrease the rate of a chemical reaction.]]> 2017-11-10 20:16:19 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205821633 Activation Energy hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205822401 Activation energy is the minimum amount of energy needed to start a chemical reaction.]]> 2017-11-10 20:19:26 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205822401 Graphing changes in energy hbenavides https://padlet.com/hbenavides/5ny83y1admod/wish/205823053 Every chemical reaction needs activation energy to start. Whether or not a reaction still needs more energy from the environment to keep going depends on whether it is exothermic or endothermic.]]> 2017-11-10 20:22:25 UTC https://padlet.com/hbenavides/5ny83y1admod/wish/205823053