0
Gas under pressure is a physical change not a chemical change because the gas is not being affected chemically (atoms are not bonding to other atoms and etc.). Pressure only forces the gas particles to be closer together, possibly reverting them to liquids if the temperature is low enough.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoNormally compressing gas simply increases its density by pressing the molecules closer together, a physical change.
Some gasses may undergo spontaneous chemical reactions under very high heat and/or pressure. For example ozone under high pressure will fairly rapidly decay into oxygen gas.
Wiki User
∙ 12y agophysical =]
Add your answer:
Earn +20 pts
Is chlorine gas liquefies at - 35 degree celsius under normal pressure a chemical or a physical change?
Physical
Is dissolving in water a chemical or physical property?
Its A physical change. When you boil water under a stove, The water evaporates and the chemical stays in the..pan or whatever you put in it.
Is dissolves in water physical property or chemical property?
Its A physical change. When you boil water under a stove, The water evaporates and the chemical stays in the..pan or whatever you put in it.
Is liquefying of air a physical change or chemical change?
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.
Is sand flowing through an hour glass an chemical or physical change?
It is not really a change, at all. Sand is moving from one spot to another. If it truly had to be categorized, I would put it under a physical change. A physical change would be a change in an object you can see with your eyes. However, the chemical makeup of that object does not change. In other words, no new chemical is formed. For example, water may freeze or evaporate, but the chemical makeup of water, no matter what state it is in, is H2O. A chemical change would would result in the formation of one or more new chemicals. For example, burning paper is a chemical change. You have paper and fire, and when you burn the paper up, it gives off CO2, and charred paper, which is different from regular paper.
Gas under pressure physical or chemical change?
Physical change.
Is chlorine gas liquefies at 35 degree celsius under normal pressure a chemical or a physical change?
chemical
Is chlorine gas liquefies at - 35 degree celsius under normal pressure a chemical or a physical change?
Physical
How do the physical and chemical properties properties of the elements change?
periodically within a group
Is formation of gas a chemical or physical change?
Physical, because the gas is still the same gas, just under pressure Some gasses may undergo spontaneous chemical reactions under very high heat and/or pressure. For example ozone under high pressure will fairly rapidly decay into oxygen gas.
Is forming ozone from oxygen a chemical change?
Putting oxygen in tanks (under pressure) is a physical change, not a chemical change. The chemical nature of the oxygen has not been altered, and it is possible to recover the original substance, thus it is not a chemical change.
What are the physical and chemical properties of acid rain?
This is a chemical change.
Is rusting a phsyical change?
Rusting is a chemical change because under it iron goes under oxidation and oxidation is a chemical process. Also, a physical change can be reversed but a chemical change cannot and rusting cannot be reversed. Hence also rusting is a chemical change.
Is a photosynthesis an example of a chemical change and not under physical change?
Chemical because the molecules get rearranged making a entirely new molecule
How is a chemical and physical change similar?
they are both categorized under characteristic properties.
Is drying fish physical change?
Drying (involving only the water evaporation) is a physical change.
What causes sedimentary rocks to become metamorphic rocks?
Sedimentary rock can become metamorphic rock under intense heat and pressure. The heat and pressure do not change the rock's chemical composition, but do change its physical properties like hardness, texture, and structure.
