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AQA GCSE Chemistry Topic 3 - Quantitative Chemistry 



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 different ways of measuring the mass or volume of a product of a reactant 

 • I can explain why the mass of a reaction appears to change 

 • I can explain that in any measurement there is a degree of uncertainty 

 • I can calculate the concentration of a solution from the masses used 

 • I can represent a reaction using a word equation 

 • I can represent a reaction using a balanced symbol equation video 1video 2 

 • I can calculate the relative formula mass (Mr) of a compound from the relative atomic (Ar) masses of the elements• I can define the term mole  Higher tier only  Video 1Video 2 

 • I can calculate the number of moles from the mass  Higher tier only 

 • I can describe the number of particles in one mole as being equal to Avogadro’s constant Higher tier only

 • I can calculate the mass of a reactant or a product given the equation  Higher tier only  I can balance equation given information about the number of moles involved.  Higher tier only 

 • I can describe when a reactant would be used in excess  Higher tier only 

 • I can calculate the percentage yield of a reaction  Chemistry only 

 • I can calculate the atom economy of a reaction  Chemistry only 

 • I can explain why a reaction may not give the expected yield  Chemistry only 

 • I can carry out a titration Video 1Video 2Video 3 Video 4 

 • I can calculate the concentration of a solution in mol/dm3  Chemistry only  Higher tier only 

 • I can carry out titration calculations  Chemistry only  Higher tier only 

 • I can recall that a gas takes up 24dm3 under standard condition  Chemistry only  Higher tier only 

 • I can calculate the volume of a gas  Chemistry only  Higher tier only