Formative Practice 4.2 – Form 5 Science (KSSM) Chapter 4

Question 1:
State five factors which affect the rate of reaction.

Answer:
Temperature of reactant, concentration of reactant, size of reactant, catalyst and pressure

Question 2:
Complete the following statements:
(a) The __________ the temperature of reactants, the higher the rate of reaction.
(b) The __________ the concentration of reactants, the higher the rate of reaction.
(c) The __________ the size of reactants, the higher the rate of reaction.

Answer:
(a) higher

(b) higher

(c) smaller

Question 3:
State one factor that only affects the rate of reaction involving reactants in the form of gas.

Answer:
Pressure