Question

Statements given below are incorrect. Write the correct statements:

Glowing filament of an electric bulb is an example of a chemical change.

Answer 1

Correct statement: Glowing filament of an electric bulb is an example of a physical change.

• Physical changes include changes in the state of matter, and changes in solubility. When a material experiences a physical change, its composition or chemical makeup does not change. Simply said, the molecules rearrange themselves somewhat without changing their internal structure or content.
• When we turn on a light bulb, electrons in the tungsten wire are stimulated, and energy is released in the form of photons. Overall, there is just a brief increase in temperature and energy release in the form of light. When we turn off the light, such things return to normal after a while.
• As a result, the glowing of a bulb is a physical change.