rates of chemical reaction

Question 1

what is collision theory?

Answer 1

is used to predict the rate of chemical reactions

Question 2

what is activation energy?

Answer 2

is needed to reactants can move together, overcome forces of repulsion, and start breaking bonds
- for a chemical reaction to occur, the reactant molecules must collide with enough energy. the minimum kinetic energy required for a reaction to occur is called activation energy

Question 3

what factors increase the rate of reaction?

Answer 3

• surface area
• temp
• pressure
• light intensity
• concentration

Question 4

how does temp affect the rate of reaction?

Answer 4

raises the kinetic energy of the reactant molecules. therefore, more collisions

Question 5

how does surface area affect the rate of reaction?

Answer 5

more particles are exposed to other reactants, so there is a greater chance of particles colliding

Question 6

how does pressure affect the rate of reaction?

Answer 6

when increasing the pressure, the molecules have less space in which they can move the greater density of molecules increases the number of collisions. when you decrease the pressure, molecules don’t hit each other as often and the rate pf reaction decreases

Question 7

how does light intensity affect the rate of reaction?

Answer 7

the more light intensity there is, the more reactant molecules is likely to gain more activation energy

Question 8

what is a catalysts?

Answer 8

is a substance that causes or accelerates a chemical reaction without it being affected

Question 9

how does a catalysts work?

Answer 9

a catalysts provided an alternative force for the reaction to take place with a lower activation energy

Question 10

what is the catalysts in the Haber process?

Answer 10

• making ammonia: iron is the catalysts

Question 11

what is the catalysts in the contact process?

Answer 11

making sulfuric acid: vanadium oxide is the catalysts