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

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