Reactivity 1 Kinetics and energy

Question 1

elementary reaction

Answer 1

when One or more molecules require one step to complete a reaction

Question 2

mechanism reaction

Answer 2

when one or more molecules require more than one step to complete a reaction

Question 3

what is rate

Answer 3

the change in concemtration of molecule during a time interval divided by time

Question 4

what is the rate law

Answer 4

k = k [concentration]^ x

Question 5

Arrhenius expression

Answer 5

this describes when two reactant molecules collide with the correct orientation for reaction.
they will only react to give products if the energy of the collision exceeds a certain minimum.

Question 6

what is endothermic

Answer 6

when the temperature of the system decrease

Question 7

what is exothermic

Answer 7

when the temperature of the closed system increase

Question 8

when bonds break

Answer 8

energfy is release to the system

Question 9

when bonds are formed

Answer 9

energy is taken from the system surroundings