SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A phase change can be observed at the molecular scale and can be explained at the macro-scale.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Each phase change has a specific name, based on what is happening to the particles of matter. The less ordered gas molecules loose energy, slow down, and become more ordered. The more ordered liquid molecules gain energy, speed up, and become less ordered. Evaporation only occurs at the surface of a liquid.
Detailed explanation-2: -There are six ways a substance can change between these three phases; melting, freezing, evaporating, condensing, sublimination, and deposition(2).
There is 1 question to complete.