chemistry
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10 Terms
what is the calculation for conservation of mass
mass of reactants= total mass of products
(example) what is c+o2➡co2 split?
1 carbon atom each
2oxogen atoms each
how to work out relative formula mass?
the mass x small number
what did the reactants that decreases have in common
they had o2 or co2 on the products side which are gasses
how to measure reactant used over time
ror=amount of reactants used
time taken
how to increase ror
temperarure
increase no. of reactant particles
more collisions with more energy
how to measure amount of product over time
ror= amount of product formed
time
what is the independent variable
what we change
what is the dependent variable
what is being measured in the practical
what is the control variable
any factor kept a certain way to ensure a fair test