Rates Of Reactions

Question 0

What happens to the rate of reaction when you change the temperature

Answer 0

Changing the temperature increases the energy and speed. It also increases the percentage of successful collisions.

Question 1

What are the 4 things that change the rate of reaction

Answer 1

Temperature
Concentration
Pressure/surface are
Catalysts

Question 2

Why happens to the rate of reaction when you change the concentration

Answer 2

Changing the concentration means there will be more collisions, but there will be the same percentage o successful collisions.

Question 3

Why happens to the rate of reaction when you change the pressure or surface area

Answer 3

If you put the particles in a smaller volume they are more likely to collide

Question 4

Why happens to the rate of reaction when you add a catalyst

Answer 4

Catalysts speed up the reaction rate by putting the particles in the right position for collision. This increases the percentage of successful collisions.

Question 5

How can you show a substance is a catalyst

Answer 5

You can only find out by weighing it before and after the reaction.

Question 6

How does a catalyst work

Answer 6

Catalysts provide the reaction with an alternate route with a lower activation energy