Diffusion in liquids and gases Practice exercise 1

Course: Grade 8 Integrated Science - Physical and chemical changes - Diffusion in Liquids and gases

Quiz Questions (23 questions)

Question 1

The image below shows a gas jar with a brown gas spreading over time. What process is being demonstrated?   (1 mark)

Question 2

The image below shows a gas jar with a brown gas spreading over time. What process is being demonstrated?   (1 mark)

Question 3

The image below shows a gas jar with a brown gas spreading over time. What process is being demonstrated?   (1 mark)

Question 4

What is diffusion?    (1 mark)

Question 5

What is diffusion?    (1 mark)

Question 6

Mary adds sugar to hot tea but does not stir it. After a few minutes, she notices the tea tastes sweet throughout. What process explains this observation?  (1 mark)

Question 7

Mary adds sugar to hot tea but does not stir it. After a few minutes, she notices the tea tastes sweet throughout. What process explains this observation?  (1 mark)

Question 8

The image shows how ink spreads slowly when Mary dropped it in water. What does this tell us about the behavior of liquid particles?  (1 mark)

Question 9

The image shows how ink spreads slowly when Mary dropped it in water. What does this tell us about the behavior of liquid particles?  (1 mark)

Question 10

The image shows how ink spreads slowly when Mary dropped it in water. What does this tell us about the behavior of liquid particles?  (1 mark)

Question 11

What causes perfume particles to spread across a room after being sprayed?   (1 mark)

Question 12

What causes perfume particles to spread across a room after being sprayed?   (1 mark)

Question 13

What allows liquids to flow?  (1mark)

Question 14

What allows liquids to flow?  (1mark)

Question 15

Why does diffusion occur faster in gases than in liquids?   (1 mark)

Question 16

Why does diffusion occur faster in gases than in liquids?   (1 mark)

Question 17

The image below shows a brown gas spreading from one jar to another. What process is taking place, and why does the gas move in this way?   (1mark)

Question 18

The image below shows a brown gas spreading from one jar to another. What process is taking place, and why does the gas move in this way?   (1mark)

Question 19

A student sprays air freshener in one corner of the room. After a few minutes, the entire room smells fresh. What explains this?  (1mark)

Question 20

A student sprays air freshener in one corner of the room. After a few minutes, the entire room smells fresh. What explains this?  (1mark)

Question 21

James heats water and adds ink to it. He observes the ink spreads faster than in cold water. Why does this happen?  (1 mark)

Question 22

James heats water and adds ink to it. He observes the ink spreads faster than in cold water. Why does this happen?  (1 mark)

Question 23

James heats water and adds ink to it. He observes the ink spreads faster than in cold water. Why does this happen? (1 mark)

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