Distinguishing between hard water and soft water Practice exercise 1

Question 1

Name one place in Kenya where people commonly use soft water. (1 mark)

Question 2

Name one place in Kenya where people commonly use soft water. (1 mark)

Question 3

What is soft water? (1 mark)

Question 4

What is soft water? (1 mark)

Question 5

What is soft water? (1 mark)

Question 6

Look at the image below. Which glass shows soft water and why? (1 mark)

Question 7

Look at the image below. Which glass shows soft water and why? (1 mark)

Question 8

The image below shows the inside of a kettle. What does the white deposit tell you about the type of water used? (1 mark)

Question 9

The image below shows the inside of a kettle. What does the white deposit tell you about the type of water used? (1 mark)

Question 10

What is hard water? (1 mark)

Question 11

What is hard water? (1 mark)

Question 12

Describe how water becomes hard as it passes through underground layers. (2 marks)

Question 13

Describe how water becomes hard as it passes through underground layers. (2 marks)

Question 14

Look at the image below of two water samples from two different towns after soap is added and the bottles are shaken. Explain which sample has hard water and give reasons for your answer. (2 marks)

Question 15

Look at the image below of two water samples from two different towns after soap is added and the bottles are shaken. Explain which sample has hard water and give reasons for your answer. (2 marks)

Question 16

Why do people in areas with hard water need to use more soap or detergent when washing clothes? (2 marks)

Question 17

Why do people in areas with hard water need to use more soap or detergent when washing clothes? (2 marks)

Question 18

Why do people in areas with hard water need to use more soap or detergent when washing clothes? (2 marks)

Question 19

Describe a simple experiment to distinguish hard water from soft water using soap and explain what observations to expect. (2 marks)

Question 20

Describe a simple experiment to distinguish hard water from soft water using soap and explain what observations to expect. (2 marks)

Question 21

Explain why hard water does not form lather easily with soap, while soft water does. (2 marks)

Question 22

Explain why hard water does not form lather easily with soap, while soft water does. (2 marks)

Question 23

Explain why hard water does not form lather easily with soap, while soft water does. (2 marks)

Question 24

Explain why hard water does not form lather easily with soap, while soft water does. (2 marks)

Quiz Questions (24 questions)