4.1.4 - Effect Of Temperature

Question 1

Why might increasing TEMPERATURE increase rate !?

Answer 1

. The particles have more kinetic energy

. So the percentage of collisions with enough energy is higher

. So there are more successful collisions per unit time

Question 2

How might you INCREASE the TEMPERATURE of particles !?

Answer 2

. By heating

Question 3

What Experiment can be used to demonstrate the effect of TEMPERATURE on RATE !?

Answer 3

. Magnesium and Acid Experiment:
-The effect of temperature on rate can be demonstrated by reacting Magnesium with Hydrochloric Acid

Question 4

Observations made when observing MAGNESIUM and ACID EXPERIMENT:

Answer 4

. Magnesium disappears

Question 5

INPUT Variable in the MAGNESIUM and ACID Experiment:

Answer 5

. The temperature of the Hydrochloric acid

Question 6

OUTPUT Variable in the MAGNESIUM and ACID Experiment:

Answer 6

. The time taken for the Magnesium to disappear

Question 7

CONTROL Variables in the MAGNESIUM and ACID Experiment:

Answer 7

. Mass and surface area of Magnesium

. Volume and concentration of Hydrochloric Acid

Question 8

How do you calculate rate !?

Answer 8

. Rate= 1/ time taken