Changes involve energy. Explain it
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when you change an object physically, you require force which is a form of energy
when you change a substance chemically, the heat released, colour changes, charges come out (all these changes require energy)
hence, every change made to any substance in the universe requires energy in any form let it be heat energy, nuclear energy or any form of energy
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A change can be defined as an alteration in the physical and chemical properties of matter due to the effect of some kind of energy.
Eg: cooking digestion of food.
Here ice get energy from the surroundings and get converted into water.
Means here energy is involved in changing the state of ice to liquid.
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