concentration and rate of reaction

what is the collision theory?

• chemical reactions can only take place when the reacting particles collide with each other. the collisions must not have sufficient energy.

• the speed at which a chemical reaction takes place this is defined as proportional to increase in concentration

• physical reactions can only take place when the reacting particles collide with each other. the collisions must have sufficient energy.

• chemical reactions can only take place when the reacting particles collide with each other. the collisions must have sufficient energy.

The higher the concentration, the more _______ in a given volume

• solvent only

• particles only

• molecules only

• all of the above

The _____ of a chemical reaction _____when the_____ of one or more of the reactants increases

• rate, increases, concentration

• particles, increases, concentration

• rate, decreases, concentration

• particles, decreases, concentration

the more particles, the higher the _____-

• collisions

• frequency of collisions

• activation energy

• temperature

the higher the frequency of collisions, the higher the ____

• chance of collision

• chance of unsuccessful collisions

• chance of successful collisions

• chance of energetic collisions

if the concentration of reactants is increased, there are more reactant particles moving together.

• true

• false

concentration is not from the factors that affect the rate of reaction.

• true

• false

decreasing the concentration of a reactant in a solution, will decrease the rate of a reaction

• true

• false