French translation of 'piles'. (= 1  neat stack) pile f in a neat pile soigneusement empilÃ©s â The clothes were folded and in a neat pile. Les vÃªtements Ã©taient pliÃ©s et soigneusement empilÃ©s. to put sth in a pile empiler qch. to be stacked in a pile Ãªtre empilÃ© â The dirty plates had been stacked in a pile on the table.
Types Of Gases. There are many Types Of Gases. Gas is one of the four basic states of matter. The other three are plasma, liquid, and solid. There are so many types of gases that are usually categorized as bulk gases. Some of the most common ones include; Propylene, Nitrous Oxide, Nitrogen, Oxygen, Carbon Dioxide, Helium, Hydrogen, and Argon.
The six noble gases are helium, neon, argon, krypton, xenon and radon. While they are all highly unreactive, the heavier elements of the group do sometimes form compounds under certain conditions. The inner electron shells of these elements form a sort of shield around the nucleus, allowing the gases to be ionized with sufficient energy.