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What is conservation of mass?
mass of products=mass of reactants
What is a multiplier?
number put infront of a substance
What is Mr
Relative atomic mass
What other than mass must be the same in reactants and in products?
Mr
Why may there appear to be a change in mass?
Gas
Why does the mass go up when a metal oxide is produced?
Gas
What is lost in thermal decomposition?
CO2
Define mole
amount of substance
What is the symbol for moles?
mol
What is the mass of 1 mole in grams?
Mr
What is the name of the constant that describes how many atoms molecule or ions every mole has?
Avogadro's
What is Avogadro's number?
6.02 x 10^23
What does mass equal using moles and Mr?
Mr*moles
What is the limiting reactant?
The first reactant which is fully used up
What are reactants that aren't fully used up referred as being in?
excess
What is yield?
amount of product obtained
Yield Formula
amount made/theoretical amount
What is the units for concentration?
mol/dm^3
What are all moles of gas at 20°c at 1 atmosphere?
24dm^3
Note 
Flashcard (33)