Rate Of Reaction

Question 1

Two rules of collision theory

Answer 1

1- The two particles must collide

2- The collision must have energy greater than the activation energy

Question 2

Activation Energy

Answer 2

The minimum energy needed to start a reaction

Question 3

Factors affecting rate of reaction

Answer 3

1- Temperature
2- Concentration
3- Pressure
4- Surface area
5- Catalysts

Question 4

What will Temp do to the rate of reaction? (1)

Answer 4

Increasing Temperature increases the rate of reaction. It will cause particles:

• To have more kinetic energy
• To move faster
• To have more frequent collisions

Question 5

What will concentration do to the rate of reaction ? (2)

Answer 5

When concentration in increased, the rate of reaction increases. This causes more frequent collisions, leading to faster rates.

Question 6

What will Pressure/Surface area do to the rate of reaction? (3/4)

Answer 6

Increasing Pressure/Surface area increases the rate of reaction.
-Both lead to more frequent collisions and more successful collisions, causing a faster rate

Question 7

What would a Catalyst do to the rate of reaction?

Answer 7

More particles have energy greater than the activation energy so there are more successful collisions.

Question 8

What is a Catalyst?

Answer 8

• A substance that speeds up a chemical reaction without being used up.
• Works by providing a different path for the reaction with a lower activation energy