SCIENCE
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Physical Change (Just changed phases)
|
|
|
Chemical Change (can’t change it back)
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Once the cake is formed, we cannot get back the original batter and the chemical composition of cake is different from that of batter. In any physical change, the chemical composition of a substance does not change. Hence baking of cake is not a physical change but a chemical change.
Detailed explanation-2: -Baking of cake is an example of Irreversible change.
Detailed explanation-3: -A baked cake is also an irreversible chemical reaction. It can’t go back to being a liquid batter. Physical changes are different to chemical changes. Melting is a physical change and is reversible.
Detailed explanation-4: -Detailed Solution. The correct answer is Baking a cake. A chemical change occurs when there is a change in the chemical composition of a substance.
Detailed explanation-5: -A change that can be reversed or can get back to its original state is called a reversible change. During baking a cake, the ingredients of cake mix up and baked. The baked ingredients of cake cannot be separated and extracted back to their original state. Hence, this is an irreversible change and cannot be reversed.