MEASURING RATE OF REACTIONS

The rate of a chemical reaction is NOT affected by which of the following:

• temperature

• particle size

• concentration

• all of these affect rate of reaction

The rate of a reaction increases as temperature__________________

• decreases

• increases

• stays the same

Products will form faster if____________

• the particle size of the reactants are larger.

• temperature is decreased.

• concentration of the reactants are increased.

• the reaction is not stirred.

  HIDE ANSWER

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction.

• catalyst

• product

• reactant

• solute

Catalysts permit reactions to proceed along a ___________energy path.

• lower

• higher

• extremely high

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

• larger

• smaller

• very small

• extremely small

The ___________ the surface area of the reactants, the faster the reaction rate.

• larger

• smaller

• colourful

• darker

Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.

• false

• true

Usually lowering the temperature will slow down a reaction.

• Neither true nor false

• True

• False

Increasing the concentration of the reactants will slow down the reaction.

• True

• False

• Neither true nor false