factors affecting rates of reaction

Question 1

Activation energy

Answer 1

amount of energy needed for particles of reactants to start having successful collisions

Question 2

Exothermic reaction

Answer 2

releases energy / heat

Question 3

Endothermic reaction

Answer 3

needs energy input /heat

Question 4

Which type of reaction needs activation energy

Answer 4

endothermic

Question 5

How concentration affects rate of reaction

Answer 5

more reacting particles means more collisions

Question 6

how surface area affects rate of reaction

Answer 6

more area for collisions to occur

Question 7

How pressure of gases affects rate of reaction

Answer 7

reactant particles are squeezed together

Question 8

how temperature affects rate of reaction

Answer 8

reactant particles speed up due to more energy

Question 9

how catalyst affects rate of reaction

Answer 9

produced activation energy by orienting reactant particles