Im trying to figure out how compressed gas works.?

Question

Im particulary talking about compressed helium. Are the helium molecule soft? How does their shape return after decompression or inserted into a balloon? How do they differ from nitrogen and hydrogen molecules or even water molecules?

Answer 1

Compressed Helium simply means there are less empty space around. The atoms themself can never touch each other without a reaction or fusion. Ultimately, Helium atoms differs from Hydrogen atoms as it is a stable atom (well, as stable as possible with a 2 electron outer shell), differs from Nitrogen for much the same reason (N has a high elecronegativity value, meaning that it would react more readily than some other atoms), and water molecules as water molecule is a polar (i.e. charged) molecule while Helium is not. But overall, their behaviour when compressed, assuming no reaction occurs, are the same. Empty space decreases, pressure increases, but the atoms do not actually touch each other. Why? Because electrons repel other electrons (negative repels negative).

Answer 2

Molecules are mostly made up of empty space, and they are all made up of the same particles whether they are helium or hydrogen, the difference is in the amount of protons. when something is compressed, its the space in between the molecules that gets decreased, not the actual molecules themselves. Helium differs from hydrogen, water, etc, in that it is a noble gas, meaning it doesn't react with anything. Hydrogen is also a gas, but it doesn't have a full outer shell so it exists naturally as H2 (two atoms bonded together)

Answer 3

Gases are compressible because they're mostly empty space. The molecules are very tiny. When you compress the gas, you're forcing the molecules closer together. The shape of the molecules doesn't change. Liquids and solids are much harder to compress because there isn't much empty space between the molecules.

Answer 4

All of the gases named act under normal circumstances as "ideal" gases: if you halve the volume, and keep the temperature constant, you double the pressure. A gas consists of molecules which attract each other slightly or not at all, and the pressure arises from the molecules bouncing off each other as well as off the walls of the container. So, if you pump in gas to double the number of molecules, they will on average bounce twice as frequently, and you will see twice the pressure. The speed of sound in a gas is a measure of the average speed of the molecules. (There are geometric reasons why the two numbers are not the same, but differ by a specific factor.) The speed of the molecules is proportional to the square root of the absolute temperature.

Answer 5

That is a series of very broad questions.
First water and liquids in general are, essentially non-compressible.
The molecules do not change but the space between them does. It increases with less pressure or increased temperature.

Answer 6

I believe that any compressed gas only becomes concentrated. that they don't change as molocules but when the partial pressure increases, they crowd closer together, less volume but more density. as a scuba diver certified to use enriched air, that's what I was taught. but it may not help ya, I also know that helium is "light" gas, as opposed to say "argon" but don't think that the molocules change, just crowd closer together under pressure.

Answer 7

very lengthy explanation