Question

2. Matter is added or removed during a chemical
3. Energy required for completion of a physical change is [released/absorbed) when the
change is reversed.
4. Dissolution of lead nitrate in water is deemed as a [physical/chemical change.
5. A change in which matter undergoes a change but the total mass of substance is unaltered
is a [physical/ chemical) change.
B. State which of the following 1 to 5 pertain to - A: Physical Change B: Chemical change :
1. Sublimation.
2. Fermentation.
3. Liquefaction or condensation.
4. Magnetization.
5. Respiration.
C. Match the examples of changes in List I with the correct type of change in List II.
List I
List 11
1. Burning of paper
A: Physical change
2. Ringing of an electric bell B: Chemical change
3. Curdling of milk
4. An electrie light is switched on
5. Melting of butter​

Answer 1

Answer:

Um

Explanation: