In a change from thermal to chemical energy, some of the energy seems to disappear. Why is this not true? Where does the energy go?
Stacey Warren - Expert brainly.com
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Hmm, think this way ... A bicycle is rolling down the hill, transferring potential energy into kinetic (movement) energy. The bicycle got its potential energy (energy due to position related to gravity) by the rider using metabolic energy to move the pedals. The pedals used mechanical energy to move the chain, which moved the wheels. The rider's metabolic energy came from chemical energy that was stored in the molecules of the food she ate.
\(Then,~ Where~did~ his~ energy ~go~ ?\) From this we understand, the energy we encounter and use everyday has always been with us since the beginning of the universe and always will be with us. It just changes form all around us. That is called the law of conservation of energy. @shylibra16