Yes, because oxygen is very reactive.
It does not because change only occurs when temperature is involved.
it would change by the oxygen going low down
Don't take only my word for it, but, i think it would be a chemical change because if you think about it you are inhaling oxygen and exhaling carbon dioxide. Which would make it a chemical change, but I am not 100% positive.
That would be a chemical change.
When a car is turned into a wreck, this involves a physical change because the molecular composition of the car doesn't change. After the crash it will still consist of steel, petrol, etc. However, if one was to set fire to the car, it would undergo a chemical change: its molecular composition would change because the molecules would bind with the oxygen molecules in the air.
If the concentration of oxygen molecules decreases, the concentration of ozone molecules would also decrease since ozone is formed from oxygen molecules in the presence of ultraviolet light. With less oxygen available, there would be fewer molecules available to form ozone.
i think there would be less oxygen because the plants take in carbon dioxide and release oxygen
No because the number of protons can not change. If it does it would then be Oxygen. Think of a proton as an id number or SSN.
It had to. So yes in a way there always was oxygen. Because if there was no oxygen to would be just hydrogen in the air.
A chemical change for a bicycle frame would involve a reaction that changes the composition of the material making up the frame. For example, if the frame undergoes rusting due to exposure to oxygen and moisture, this would be a chemical change as the iron in the frame reacts with oxygen to form iron oxide.
We need oxygen to let your body work. You would die without oxygen because the chemistry of your body would stop working.to live
because the iron and oxygen have combined on an atomic level creating the compound iron oxide and you would need to manipulate it on the atomic level to separate it.