Question

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Answer 1

Answer:

1. As the kinetic energy increases, the molecular motion increases and the molecules of the liquid overcome the force of attraction between them. ... This produces a pressure above the liquid equal to the atmospheric pressure and the liquid starts boiling.
2. Since the kinetic energy of a molecule is proportional to its temperature, evaporation proceeds more quickly at higher temperatures. ... As the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the liquid decreases.
3. At the moment of melting the average kinetic energy of the molecules does not change. The heat is used to break the bonds between the ice molecules as they turn into a liquid phase
4. Since the kinetic energy of a molecule is proportional to its temperature, evaporation proceeds more quickly at higher temperatures. As the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the liquid decreases.
5. At such high temperatures, matter remains in plasma state, a collection of charged particles. ... In a plasma undergoing fusion, the reactions can be self sustained, as part of the kinetic energy of the resulting charged Helium can be used to maintain the very high temperatures required to sustain the fusion reactions.

Explanation:

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