Question

Ravi and Tina were working on a project based on ‘Changes around us’, for which they were observing different changes occurring in their daily life. They went to kitchen where they saw their mother was cooking food on LPG stove. Ravi said that burning of LPG in LPG stove involves chemical change. But Tina argued that both physical and chemical changes are involved in this process. According to you who is correct and why?
Note: will mark Brainliest but Please do not copy answers from the internet!

Answer 1

Answer: It includes both a physical and chemical change

Explanation: Because the gas is turning into fire which is physical and the gas is giving out heat which is chemical

Answer 2

Answer:

There is both physical and chemical change happening.

Physical change is a reversible change but chemical change is irreversible.

When the LPG burns, there is both physical and chemical change happening,

• When LPG comes out of the cylinder, it is converted from liquid to gaseous state - physical change

• When the gas burns in air - chemical change

Therefore Tina is correct in the argument.