6.2

Question 1

Temperature

Answer 1

the higher the temperature, the greater the rate of reaction.

Question 2

Concentration

Answer 2

Thus, increasing the concentration of the reactants usually results in a higher reaction rate.

Question 3

Surface area

Answer 3

many small particles have a greater total surface area than one large particle. The more surface contact between reactants, the higher the rate of reaction.

Question 4

Catalyst

Answer 4

When catalysts are used, a reaction can proceed although less energy is added during the reaction.