OCR C3

The rate of reaction measures how much product is formed in a fixed period of time.
 

units- g/s (grams per second) ,g/min (grams per minute), cm(3)/s (centimeter cubed per second), cm(3)/min (centimeter cuber per min)

The rate of reaction can be worked out from the gradient of a graph. gradient = y/x

The limiting reactant is the reactant not in excess that gets used up by the end of the reaction.

The amount of product formed in a reaction is directly proportional to the amount of the limiting reactant used.  

Reactions occur when particals collide together. 

The rate of reaction depend on the number of collisions between reacting particals: the higher the number of collisions that take place, the faster the reaction.

The rate of reaction can be increased by:

Concentration increase - Increases particals become more crowded.This increases the number of collisions between reacting particals.

Temperature increase -  Particals gain kinetic energy which causes the particals to move faster so more successful collisions

Pressure increase - Forces particals closer together and increases collision frequency.

Explotation means making an estimate beyond the range of results.

Interpolation means making an estimate between the results in a range.