Page 3 - Home Assignment 1
P. 3
Subjective Questions
Q. No. Questions Marks Skill
1. What is a physical change? 1 K
2. What do you mean by chemical change? 1 K
3. Define reactants. 1 K
4. Why does Idli batter rise when kept overnight without refrigeration? 3 A+H
5. Differentiate between Physical and Chemical Changes. (3 points) 3 C
6. Classify the following changes as physical and chemical changes: 5 A
a. Deflating of a cycle tyre tube
b. Green mangoes changing into yellow mangoes
c. Melting of wax
d. Baking of cookies
e. Burning of incense stick
f. Glowing of iron when placed in a fire
g. Formation of clouds
h. Turning a key to open a lock
i. Boiling Potatoes
j. Digestion of food
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