Question

A student claims that since the three phases have different amounts of energy, molecules in substances gain or lose energy only during phase transitions. Explain what is wrong with this student's reasoning.

Answer 1

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Answer 2

@zzr0ck3r @zscdragon @Calcmathlete @Carlowski @BulletWithButterflyWings @melody16

Answer 3

So basically energy only changes when there is heat involved.

we have the three energy levels; solid, liquid, and gas.

When things heat up their energy will change, and their form will change but their form will be neutral, therefore it doesnt need to be in transition to change energy levels.

Answer 4

please stop tagging me. if you want me to answer your chemistry questions you will get every single one of them wrong........i have never taken a chem class in my life.

ps its super annoying to tag 50 people......

Answer 5

@zzr0ck3r sorry

Answer 6

The amount of energy possessed by a substance in a certain phase is not same at all temperatures..
The amount of energy (of molecules) is greater at higher temperature than at lower temperature even when it is in the same phase. So, energy can be gained and lost just by increasing and decreasing the temperature in the same phase.

Its true that molecules in substances gain or lose energy during phase transitions. So, the student is correct but he is "partially correct".. He missed the above reasoning..

Answer 7

^^^ worded much better than my explanation