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The distinction as common defined (see wikipedia) is dreadfully vague, and circular, and so a hazard to good science. I'd suggest you think in terms of the extent to which chemical bonds are created or destroyed. Air and gas are partial synonyms, making your intent unclear. Let's suppose you mean typical Earth atmosphere and some sort of gaseous petrochemical. In many cases this results in only a physical change, as no chemical bonds are made or broken. In the presence of sufficient heat, or other factors, combustion may ensue. Combustion is a chemical process in that chemical bonds shift about, sometimes rather vigorously.
What else can I help you with?
Is a toast a chemical or physical change?
Chemical
Does making a salad have a physical change?
Yes, making a salad involves physical changes. The cutting, chopping, and mixing of ingredients are physical processes that alter the size, shape, and texture of the ingredients, but do not change the chemical composition of the individual components.
Is melting snow into water chemical or physical change?
physical, because there is no chemical reaction to cause the change. it's just heat.
Is bread toasted a physical or chemical change?
Physical cause it is still bread
Did a chemical change or a physical change cause in a crushed cans appearance?
this queston is stupid
Is mixing baking soda and vinegar a chemical or physical change?
Mixing flour and baking soda is a physical change; the process of mixing them together does not in itself cause them to change into any other chemical. However, when the pastry is baked, then there will be chemical changes.
Is mixing salt and pepper chemical?
Physical change as no new substance is formed and the properties have also not changed. Hope it helps!
Is baking soda mixed iodine solution a chemical change?
Chemical, When something changes in color, it is a sign of a chemical change.
Does evaporation cause a physical change or a chemical change?
It is physical change
Is a toast a chemical or physical change?
Chemical
Does making a salad have a physical change?
Yes, making a salad involves physical changes. The cutting, chopping, and mixing of ingredients are physical processes that alter the size, shape, and texture of the ingredients, but do not change the chemical composition of the individual components.
Is a odor a physical or chemical change?
AnswerNeither. Odor is not a change at all. Odor is airborne molecules that have a particular smell. A change is a process and odor is not a process. The things which cause odors can be either physical or chemical. For instance, the body odor is caused by chemical changes, but if you open jar of a smelly chemical, that is a physical change (some of the molecules of the chemical are evaporating and are thus airborne).When talking about mixing chemicals and substances, a change in odor is a chemical change.(I assume this is what you meant when you asked is odor a chemical or physical change)
Is melting snow into water chemical or physical change?
physical, because there is no chemical reaction to cause the change. it's just heat.
Is bread toasted a physical or chemical change?
Physical cause it is still bread
Is flettening a chemical change?
No, flattening is a physical change, not a chemical change. A chemical change involves a change in the chemical composition of a substance, whereas flattening simply changes the shape or appearance of the object.
Can a physical change cause a chemical change?
Yes, it can. Example: heating up,
Can a chemical change cause physical change?
Yes, it can. Example: heating up,
