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Activity › Discussion › Science & Technology › Science class 7th › Reply To: Science class 7th

  • Subiksha

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    June 21, 2023 at 7:06 pm
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    ::

    Photosynthesis: Chemical change.

    Melting of wax: Physical change.

    dissolving of salt in water: Physical change.

    Digestion offood:Chemical change.

    Burning of coal: Chemical change.

    • This reply was modified 3 months, 2 weeks ago by  Subiksha.
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