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Edexcel GCSE Chemistry Topic 7 - Rates Of Reaction And Energy Changes




Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.

 

 • I can describe how to investigate the rate of a reaction  Video 1  Video 2  Video 3 

 • I can recall ways to measure the quantity of a reactant of product

 • I can recall the units for measuring rate of reaction

 • I can give the quantity of a reactant in moles

 • I can draw a graph to show the progress of a reaction by showing the reactant being used up or a product being formed

 • I can calculate the mean rate of a reaction

 • I can draw tangents to curves and interpret the slope of these

 • I can calculate the gradient of a curve from the tangent

 • I can describe and explain how a change in temperature will affect a rate of a reaction

 • I can describe and explain how a change in pressure will affect a rate of a reaction

 • I can describe and explain how a change in concentration will affect a rate of a reaction

 • I can describe and explain how a change in surface area will affect a rate of a reaction Video 1  Video 2 

 • I can describe and explain how catalyst will affect a rate of a reaction

 • I can use collision theory to explain how different factors (temperature/ pressure/ concentration/ surface area) will affect the rate of a reaction

 • I can describe how a catalyst lowers activation energy

 • I can draw an energy profile diagram for a catalysed and an uncatalysed reaction

 • I can recall that energy changes happen when; a salt dissolves in water; during a neutralisation reaction; during a displacement reaction and during a precipitation reaction

 • I can describe the energy changes in an exothermic or and endothermic reaction

 • I can give uses for endothermic and exothermic reactions

 • I can draw the reaction profiles for endothermic and exothermic reactions

 • I can determine the energy change in a reaction

 • I can recall that energy is needed to break bonds - Higher tier only

 • I can recall that energy is released when bonds are made - Higher tier only

 • I can calculate the energy change in a reaction - Higher tier only

 • I can define the term activation energy