Energy of Solids, Liquids, and Gases
Most recent answer: 10/22/2007
- Brian (age 10)
I don’t quite understand what you mean by "energy states," but here’s what I do know about solids, liquids, and gases. Solids are things where the molecules are all stuck together very tightly in a regular pattern. The molecules move around very little and have a low amount of energy. If you add energy by heating it up, the molecules will move around faster and slide against each other, and it will be a liquid. Molecules in a liquid have more energy than molecules in a solid. And if you heat it up even more, the molecules will speed up so much that they won’t be stuck together at all. The molecules in the gas have the most energy.
(published on 10/22/2007)
Follow-Up #1: energy in solids, liquids, and gases
- kayla (age 12)
canton , ohio, america
In one case (3He) you can actually make the liquid turn solid by heating it up. In that weird case the solid has more energy than the liquid. The reasons for that special behavior are too tricky for me to describe here. It's something you may get to understand if you study physics further.
(published on 01/05/2012)
Follow-Up #2: turning gas to liquid
- Cassandra (age 13)
Yes, that's exactly how it works. There are some exceptions (for example, CO2) for which the gas turns directly to a solid when it's cooled down.
(published on 11/22/2015)