Oil burns in air because it undergoes a chemical reaction with oxygen, resulting in combustion. In contrast, water extinguishes fire by smothering it and lowering the temperature, preventing oxygen from reaching the fuel source.
Discussion Forum Latest Questions
Water and cooking oil differ in odor and inflammability due to their distinct chemical compositions.
A physical change involves a change in the physical state or appearance of a substance without altering its chemical composition, whereas a chemical change involves the formation of new substances with different chemical compositions.
Despite starting with the same materials, the properties of the products obtained by Groups I and II differ because Group I involves a physical change, while Group II involves a chemical change or reaction.
The gas obtained by Group II is hydrogen sulfide. It is a colorless gas with the smell of rotten eggs.