Multiple choice

Souring of milk is an example of

  1. chemical change

  2. physical properties

  3. physical change

  4. chemical properties
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A Correct answer
Explanation

Chemical change is the change in which a substance becomes another substance with different properties. An energy change always accompanies a chemical change either loss or gain of heat, light, or some other form of energy. Example: souring of milk, silver tarnishing, electrolysis of water.

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