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Which of the following changes involves absorption of energy and formation of new substances?

medium Q5 of 15
General Science - Physics (Basics)
Which of the following changes involves absorption of energy and formation of new substances?
APhotosynthesis in plants
BMelting of ice
CFreezing of water
DEvaporation of alcohol
Step-by-Step Solution
  1. Step 1: Understand energy absorption in changes

    Chemical changes may absorb energy and form new substances.
  2. Step 2: Analyze options

    Photosynthesis absorbs sunlight energy to form glucose (new substance). Melting, freezing, and evaporation are physical changes without new substances.
  3. Final Answer:

    Photosynthesis in plants → Option A
  4. Quick Check:

    Energy absorption and new substances = Photosynthesis ✅
Quick Trick: Photosynthesis is a chemical change requiring energy.
Common Mistakes:
  • Confusing melting or evaporation as chemical changes.
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