Demonstrating Osmosis practice exercise 1

Question 1

Observe the image below of a wilted sukuma wiki (kale) leaf placed in fresh water. After some time, the leaf becomes firm again. What process is responsible for this change? (1 mark)

Question 2

Observe the image below of a wilted sukuma wiki (kale) leaf placed in fresh water. After some time, the leaf becomes firm again. What process is responsible for this change? (1 mark)

Question 3

Observe the image below of a wilted sukuma wiki (kale) leaf placed in fresh water. After some time, the leaf becomes firm again. What process is responsible for this change? (1 mark)

Question 4

Observe the image below of a wilted sukuma wiki (kale) leaf placed in fresh water. After some time, the leaf becomes firm again. What process is responsible for this change? (1 mark)

Question 5

Study the image below of a peeled egg placed in salty water. The egg appears to shrink. What process causes this and what does it show in living things? (2 marks)

Question 6

Study the image below of a peeled egg placed in salty water. The egg appears to shrink. What process causes this and what does it show in living things? (2 marks)

Question 7

A learner soaked dried raisins in a cup of water overnight. The raisins increased in size. a) What process is responsible for this? (1 mark)b) How does it help in living organisms? (1 mark)

Question 8

A learner soaked dried raisins in a cup of water overnight. The raisins increased in size. a) What process is responsible for this? (1 mark)b) How does it help in living organisms? (1 mark)

Question 9

A learner soaked dried grapes in a cup of water overnight. The dried grapes increased in size. a) What process is responsible for this? (1 mark)b) How does it help in living organisms? (1 mark)

Question 10

Study the image below showing a visking tube containing salt solution immersed in pure water. The solution level inside the tube has risen after some time. What process is shown and how does it occur? (2marks)

Question 11

Study the image below showing a visking tube containing salt solution immersed in pure water. The solution level inside the tube has risen after some time. What process is shown and how does it occur? (2marks)

Question 12

A fresh carrot was placed in salty water. It became soft after some time. Which process explains this observation? (1 mark)

Question 13

A fresh carrot was placed in salty water. It became soft after some time. Which process explains this observation? (1 mark)

Question 14

A fresh carrot was placed in salty water. It became soft after some time. Which process explains this observation? (1 mark)

Question 15

A piece of raw mango was placed in concentrated sugar solution. After a while, it became smaller. What process is involved? (1 mark)

Question 16

A piece of raw mango was placed in concentrated sugar solution. After a while, it became smaller. What process is involved? (1 mark)

Question 17

A piece of raw mango was placed in concentrated sugar solution. After a while, it became smaller. What process is involved? (1 mark)

Question 18

A piece of raw mango was placed in concentrated sugar solution. After a while, it became smaller. What process is involved? (1 mark)

Question 19

Explain why a slug shrivels when salt is sprinkled on it. (2 marks)

Question 20

Explain why a slug shrivels when salt is sprinkled on it. (2 marks)

Question 21

Explain why a slug shrivels when salt is sprinkled on it. (2 marks)

Question 22

Observe the image below of a potato chip placed in a concentrated sugar solution. After some time, the chip becomes soft and flexible. What process is taking place and what causes the change? (2 marks)

Question 23

Observe the image below of a potato chip placed in a concentrated sugar solution. After some time, the chip becomes soft and flexible. What process is taking place and what causes the change? (2 marks)

Question 24

The diagram below shows a potato chip placed in a concentrated sugar solution. After some time, the chip becomes soft and flexible. What process is taking place and what causes the change? (2 marks)

Question 25