EVERYDAY SCIENCE

Detailed explanation-1: -When the reactants are heated, the average kinetic energy of the molecules increases. This means that more molecules are moving faster and hitting each other with more energy. If more molecules hit each other with enough energy to react, then the rate of the reaction increases.

Detailed explanation-2: -Raising the temperature of a chemical reaction results in a higher reaction rate. When the reactant particles are heated, they move faster and faster, resulting in a greater frequency of collisions.

Detailed explanation-3: -An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).

Detailed explanation-4: -Adding catalyst can most effectively speed up the chemical reaction.

Detailed explanation-5: -The extent of mixing of the reactants influences the frequency of molecular collisions-if reactants are more thoroughly mixed, the molecules will collide more often and thus react faster.