The option that is not a chemical change is "Evaporation of water".

Here's why:

1. Evaporation of water: This is a physical change. In evaporation, water changes from its liquid state to a gaseous state (steam or water vapor), but it is still water. No new substances are formed.

2. Dissolution of rubber in petrol: This is a chemical change. The rubber dissolves in the petrol to form a new substance.

3. Burning of a match stick: This is a chemical change. When a match burns, the chemicals in the matchstick and the match head react to produce heat, light, water vapor, and gases that form smoke. New substances are formed in this process.

4. Glowing of an electric bulb: This is a physical change. The electricity flowing through the filament of the bulb causes it to glow, but no new substances are formed.

Question

The option that is not a chemical change is "Evaporation of water".

Here's why:

1. Evaporation of water: This is a physical change. In evaporation, water changes from its liquid state to a gaseous state (steam or water vapor), but it is still water. No new substances are formed.

2. Dissolution of rubber in petrol: This is a chemical change. The rubber dissolves in the petrol to form a new substance.

3. Burning of a match stick: This is a chemical change. When a match burns, the chemicals in the matchstick and the match head react to produce heat, light, water vapor, and gases that form smoke. New substances are formed in this process.

4. Glowing of an electric bulb: This is a physical change. The electricity flowing through the filament of the bulb causes it to glow, but no new substances are formed.

Knowee AI · Accepted Answer

The option that is not a chemical change is "Evaporation of water".

Here's why:

1. Evaporation of water: This is a physical change. In evaporation, water changes from its liquid state to a gaseous state (steam or water vapor), but it is still water. No new substances are formed.

2. Dissolution of rubber in petrol: This is a chemical change. The rubber dissolves in the petrol to form a new substance.

3. Burning of a match stick: This is a chemical change. When a match burns, the chemicals in the matchstick and the match head react to produce heat, light, water vapor, and gases that form smoke. New substances are formed in this process.

4. Glowing of an electric bulb: This is a physical change. The electricity flowing through the filament of the bulb causes it to glow, but no new substances are formed.

Which of the following is not a chemical change?Evaporation of waterDissolution of rubber in petrolBurning of a match stickGlowing of an electric bulb

Question

Which of the following is not a chemical change?

Solution

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