chemistry Flashcards
examples of fast reactions
burning, explosions and fireworks
examples of slow reactions
fuel, oil, coal, metal rusting
what is Rate Of Reaction?
rate of reaction tells us how fast a chemical reaction happens
how can we find out the rate of reaction?
by doing experiments
what are the two formulas for finding out the rate of reaction?
rate=change in amount of reactants used
time
rate=change in amount of product formed
time
what is the formula equation?
CaCo(s)+ HCL(aq)+CaCL2 (aq)+ H2O(l) + CO2
what can be easily measured?
gas can be easily measured.
when is the reaction fastest?
at the start
when can you tell the reaction is slowing down?
you can tell the reaction is slowing down when the gradient on the graph starts to level off.
when is the reaction stopped?
when the gradient becomes a straight line.
if the temperature is increased what will happen to the speed of reaction?
if the temperature was increased the chance of collision would increase therefore the rate of reaction will increase
what would happen if the concentration was increased?
if the concentration was increased the chance of collision would increase therefore the rate of reaction will increase
what is a catalyst?
a catalyst is a substance which increases the speed of reaction without being used up. It maximises the surface area and allows the particles to collide more.
what are the advantages of a catalyst?
none of the catalyst is lost.
it saves a lot of money because it can be re used
what is The Haber process?
the Haber process is the production of ammonia for making nitric acid and fertilisers.
