chapter 9- rates of reaction

Question 1

ways to work out rate of chemical reaction

Answer 1

-the reactants are used up as they make products
-the products of the reaction are made

Question 2

the steeper the line…

Answer 2

the faster the reaction

Question 3

collision theory

Answer 3

particles colliding with sufficient energy for a reaction to take place

Question 4

activation energy

Answer 4

the minimum amount of energy that particles must have before they react

Question 5

increasing surface area

Answer 5

rate of chemical reaction increases, increases the frequency of collision between reacting particles

Question 6

increasing temperature

Answer 6

-increases rate of chemical reaction
-particles collide more frequently, with more kinetic energy
-more of the collision result in a reaction because of higher proportion of particles have energy greater than the activation energy

Question 7

increasing concentration

Answer 7

-increases frequency of collisions, increases rate of reaction

Question 8

increasing pressure

Answer 8

-more particles of gas in a given space, increases frequency of collisions
-speeds up rate of reaction

Question 9

catalyst

Answer 9

-speeds up rate of chemical reaction but it is not used up itself, remains chemically unchanged

Question 10

catalysts in industry