A. Sublimation of iodine
B. Heating a platinum wire in a Bunsen flame
C. Heating of mercuric oxide powder
D. Evaporation of alcohol
Check Answer
The correct answer is C) Heating of mercuric oxide powder.
A chemical change is a process that results in the formation of new substances with different chemical properties. Heating mercuric oxide powder (HgO) is an example of a chemical change as it decomposes into mercury and oxygen gas. In contrast, sublimation of iodine, heating a platinum wire in a Bunsen flame, and evaporation of alcohol are physical changes that do not result in the formation of new substances with different chemical properties.
A chemical change is a process that results in the formation of new substances with different chemical properties. Heating mercuric oxide powder (HgO) is an example of a chemical change as it decomposes into mercury and oxygen gas. In contrast, sublimation of iodine, heating a platinum wire in a Bunsen flame, and evaporation of alcohol are physical changes that do not result in the formation of new substances with different chemical properties.
