Yes, it is a change of state.
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.
The liquefaction of chlorine gas at -35 degrees Celsius under normal pressure is a physical change. This is because the change in state from a gas to a liquid does not alter the chemical composition of the substance, only its physical state.
Filtering air to remove dust and pollen is a physical change because the process does not alter the chemical composition of the dust and pollen particles. It simply separates them from the air through physical means, such as using a filter.
Heating the air in a balloon is a physical change because it does not involve any chemical reactions. The heat causes the air molecules to move faster, increasing their kinetic energy and causing the balloon to expand.
physical change. the rubber is still rubber and the air is still air, so NO chemical change has occured
The most important is the liquefaction of gases.
Physical because it is still Oxygen. A chemical change results in a chemical equation and thus a new substance. No new substance = no chemical change. Liquefaction is a physical property.
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.
Physical changes: vaporization, melting, sublimation, liquefaction etc. Chemical changes: oxydation, combustion, polymerization, radiolysis.
Yes, liquification of air is a physical change.
liquefaction-change from solid to liquid state condensation-change from gas to liquid-just opposite of evaporation
Liquefaction
Cooking is a chemical change; but some physical changes may be involved: de freezing, liquefaction, evaporation.
The liquefaction of chlorine gas at -35 degrees Celsius under normal pressure is a physical change. This is because the change in state from a gas to a liquid does not alter the chemical composition of the substance, only its physical state.
Physical change
Filtering air to remove dust and pollen is a physical change because the process does not alter the chemical composition of the dust and pollen particles. It simply separates them from the air through physical means, such as using a filter.
Air components are separated by criogenic distillation.