Applications of physical and chemical changes Practice exercise 2

Course: Grade 8 Integrated Science - Physical and chemical changes - Applications of physical and chemical changes

Quiz Questions (43 questions)

Question 1

A baker mixes dough and places it in an oven. After baking, the dough becomes fluffy bread with a nice smell. What type of change has taken place? (1 mark)

Question 2

A baker mixes dough and places it in an oven. After baking, the dough becomes fluffy bread with a nice smell. What type of change has taken place? (1 mark)

Question 3

A baker mixes dough and places it in an oven. After baking, the dough becomes fluffy bread with a nice smell. What type of change has taken place? (1 mark)

Question 4

A baker mixes dough and places it in an oven. After baking, the dough becomes fluffy bread with a nice smell. What type of change has taken place? (1 mark)

Question 5

A farmer leaves a metal hoe in the field. After several rainy days, reddish-brown rust forms on the surface. What type of change has happened to the metal hoe?  (1 mark)

Question 6

A farmer leaves a metal hoe in the field. After several rainy days, reddish-brown rust forms on the surface. What type of change has happened to the metal hoe?  (1 mark)

Question 7

A farmer leaves a metal hoe in the field. After several rainy days, reddish-brown rust forms on the surface. What type of change has happened to the metal hoe?  (1 mark)

Question 8

A farmer leaves a metal hoe in the field. After several rainy days, reddish-brown rust forms on the surface. What type of change has happened to the metal hoe?  (1 mark)

Question 9

A farmer leaves a metal hoe in the field. After several rainy days, reddish-brown rust forms on the surface. What type of change has happened to the metal hoe?  (1 mark)

Question 10

Mama Amina boils water to make tea. After some time, steam is seen rising from the sufuria. What type of change is happening as the water boils?  (1 mark)

Question 11

Mama Amina boils water to make tea. After some time, steam is seen rising from the sufuria. What type of change is happening as the water boils?  (1 mark)

Question 12

Mama Amina boils water to make tea. After some time, steam is seen rising from the sufuria. What type of change is happening as the water boils?  (1 mark)

Question 13

Mama Amina boils water to make tea. After some time, steam is seen rising from the sufuria. What type of change is happening as the water boils?  (1 mark)

Question 14

The diagram below shows a candle burning, and melted wax collecting at the bottom. What kind of change is taking place as the wax melts?  (1 mark)

Question 15

The diagram below shows a candle burning, and melted wax collecting at the bottom. What kind of change is taking place as the wax melts?  (1 mark)

Question 16

The diagram below shows a candle burning, and melted wax collecting at the bottom. What kind of change is taking place as the wax melts?  (1 mark)

Question 17

The diagram below shows a candle burning, and melted wax collecting at the bottom. What kind of change is taking place as the wax melts?  (1 mark)

Question 18

The diagram below shows a jiko with glowing charcoal and a cooking pot on top. What type of change is happening as the charcoal burns?  (1 mark)

Question 19

The diagram below shows a jiko with glowing charcoal and a cooking pot on top. What type of change is happening as the charcoal burns?  (1 mark)

Question 20

The diagram below shows a jiko with glowing charcoal and a cooking pot on top. What type of change is happening as the charcoal burns?  (1 mark)

Question 21

The diagram below shows a jiko with glowing charcoal and a cooking pot on top. What type of change is happening as the charcoal burns?  (1 mark)

Question 22

What change of state is involved in ironing clothes with a steam iron?

Question 23

Study the image above of steam coming from an iron. What change of state is taking place?

Question 24

Study the image above of steam coming from an iron. What change of state is taking place?

Question 25

Study the image above of steam coming from an iron. What change of state is taking place? (1 mark)

Question 26

When butter is melted during cooking, what type of change in state is happening?

Question 27

When butter is melted during cooking, what type of change in state is happening?   (1mark)

Question 28

When butter is melted during cooking, what type of change in state is happening?   (1mark)

Question 29

When butter is melted during cooking, what type of change in state is happening? (1mark)

Question 30

Why do we use refrigerators at home?

Question 31

Why do we use refrigerators at home?   (1mark)

Question 32

Why do we use refrigerators at home?   (1mark)

Question 33

Why do we use refrigerators at home?   (1mark)

Question 34

Why do we use refrigerators at home? (1mark)

Question 35

Why is steaming vegetables considered a healthy cooking method?

Question 36

Why is steaming vegetables considered a healthy cooking method?   (1mark)

Question 37

Why is steaming vegetables considered a healthy cooking method?   (1mark)

Question 38

Why is steaming vegetables considered a healthy cooking method?   (1mark)

Question 39

Why is steaming vegetables considered a healthy cooking method? (1mark)

Question 40

What is happening to the ice cubes when they are added to a drink?

Question 41

Referring to the image above showing ice cubes in a drink. What is happening to the ice cubes?   (1 mark)

Question 42

Referring to the image above showing ice cubes in a drink. What is happening to the ice cubes?   (1 mark)

Question 43

Referring to the image above showing ice cubes in a drink. What is happening to the ice cubes? (1 mark)

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