rate of reaction

Increasing rate of reaction

Increase temp, conc, pressure and SA

increasing the temperature effect

increases the kinetic energy of the molecules and increases the likelihood of frequent collisions

Increasing concentration effect

More particles in given space so more frequent collisions

Increasing pressure effect

Less space for given particles so more frequent collisions

Catalysts

substances that speed up chemical reactions

How do catalysts increase the rate of reaction?

By providing a different pathway for the reaction that has a lower activation energy

Rate of Reaction Practical

-Gas syringes or collection of water can be used to see how much gas is produced

-Mass loss can be measured via balance

-colour change

-formation of precipitate

Rate of reaction graph

steeper line = faster rate

flat = reaction finished

higher line = more reactants and products

Rate of reaction equation

amount of reactant used up or amount of product formed / time

Use of enzymes as catalysts

Catalyse DNA replication , protein synthesis and digestion