2)DIFFUSION EXPERIMENT

Question 1

What is the 1st step of the diffusion experiment?

Answer 1

Prepare a petri dish containing a 2cm DEEP LAYER of agar jelly dyed PURPLE with POTASSIUM PERMANGANATE

Question 2

What is the 2nd step of the diffusion experiment?

Answer 2

cut out 3 cubes of diff sizes from the jelly with side lengths of 2cm,1cm,0.5 cm

Question 3

What is the 3rd step of the diffusion experiment?

Answer 3

Drop the cubes ( at the same time) into beakers of dilute HYDROCHLORIC ACID

Question 4

What is the 4th step of the diffusion experiment?

Answer 4

Record the time it takes for each cube to turn colourless

Question 5

What is the conclusion for this experiment?

Answer 5

The dilute HYDROCHLORIC ACID diffuses from where its highly concentrated to where its lowly concentrated inside the cube

Question 6

Why do we use agar jelly in the experiment?

Answer 6

same consistency similar to the cytoplasm of a cell/HIGH WATER CONTENT

Question 7

Why does the cubes turn colourless?

Answer 7

When HCI reacts with potassium PERMANGANATE the purple colour of the permanganate disappears