Physical and chemical changes Worksheet-2

Physical and chemical changes Worksheet-2

Multiple-Choice Question:

1. Which of the following is an example of chemical change?

(A) Filling up a balloon with hot air

(B) Taking a glass of water and freezing it by placing it in the freezer

(C) A plant makes its food in presence of sunlight i.e photosynthesis

(D) Your dog ripping up your homework.

2. Which of the following is an example of a physical change?

(A) Rusting of metal                        (B) Tarnishing of Silver

(C) Boiling of Water                        (D) Boiling of Water

3. Which of the following is a physical change?

(A) Oxidation of iron

(B) Aluminium metal is pounded into thin sheets

(C) Rusting of copper

(D) Chewing of a candy

4. A physical change is named so because:

(A) Only change in physical properties takes place

(B) Energy transfer takes place

(C) It is reversible

(D) All of these

5. Condensation of steam is a:

(A) Physical change                        

(B) Physical change

(C) Both of these

6. Spoiling of food is a:

(A) Physical change                        

(B) Chemical change

(C) Both of these

7. Boiling an egg is a:

(A) Physical change                        

(B) Chemical change

(C) None of these

8. Transparent substances become cloudy. It is a:

(A) Physical change                        

(B) Chemical change

(C) Both of these

9. Rusting of iron is fastened in the presence of:

(A) Pure water                                 (B) Sweet water

(C) Saline water                               (D) None of these

10. A sample of liquid in a narrow tube expands as its temperature increases:

(A) Physical change                        

(B) Chemical change

(C) Both of these

11. An image develops on photographic film exposed to light is a:

(A) Physical change                        

(B) Chemical change

(C) None of these

12. Crystallization is a:

(A) Physical change                        

(B) Chemical change

(C) Both of these

Answer key:

1. (C)
2. (C)
3. (B)
4. (D)
5. (A)
6. (B)
7. (B)
8. (B)
9. (C)
10. (A)
11. (B)
12. (C)