Is liquefying of air a physical change or chemical change?

Answer 1

Please note that a "change of state" involves TWO states, not just one. Using just the three most common states of matter:

* A solid can change to a gas

* A liquid can change to a gas

* A gas can change to a liquid

* A gas can change to a solid

* A solid can change to a liquid

* A liquid can change to a solid

The first four changes in the list above involve gases.

Answer 2

I'd say, that it is a physical change with which many chemical changes can be associated. If breathing is taken only to be exhaling and inhaling then it's a physical process. But, in essence the oxygen taken inside is ultimately initiating chemical reactions at cellular level - chemical change .

So, it sort of depends on the context chosen.

Answer 3

hi it is a physical change as it can be reversed it is not permanent no new products are formed

Answer 4

Liquefaction of air is a physical change. This process is the change of a gaseous substance into a liquid phase. An example of the liquefaction of air is when air hits a cold glass.

Answer 5

Cooling the air is a Physical Change but there can be a chemical change going on inside the air conditioner with the coolant.

Answer 6

this is when a gas changes into a solid or a liquid. the name for a gas changing to a solid is calleddeposition and a gas changing to a liquid is called condensation.

Answer 7

Yes the compression of a gas is a physical change.

Answer 8

It is a physical change since air can be liquefied under high pressure. When we decrease the pressure it changes back into air.

Answer 9

phyiscal

Answer 10

chemical