Question

Physical & Chemical Changes
25 marks
Q.1 Fill in the blanks with the appropriate words for each of the statements given below: [5]
1. Germination of seeds is considered a
[physical/ chemical change.
2. If a change is permanent & irreversible it is considered a [chemical/physicall
change.
3. Heating a piece of iron, is considered a [physical/chemical] change, while
heating a piece of coal (carbon] is considered a [physical/chemical change.
4. Chemical changes may involve exchange of energy in the form of
&
[light/sound/magnetic/heat).
5. Change of milk to curd is a [desirable/undesirable change.
​

Answer 1

Answer:

1.physical change 2.chemical change 3. chemical change  or. physical change  4.heat 5. desirable  change

Answer 2

Answer:

1.physical change 2.chemical change 3. chemical change  or. physical change  4.heat 5. desirable  change