The pressure increases, and the temperature goes up a little.
Depending on the contents of the ambient air at the moment of pumping, the composition of the air inside may change a little bit.
since temperature and pressure are directly proportional....the molecules will move around faster because as pressure goes up so does temperature which means that because kinetic energy is the energy of motion and tmeperature is a measure of average kinetic energy, the molecules will be in faster motion
When you pump air into a tire, it compresses the air, which squeezes the molecules in the air closer together.
air with an air pump
A Bicycle Pump is used to pump the tyres on Bikes it is normally a simple hand operated device which pushes air through a tube atached to a nozel which is screwed to the Valve on a Bicycle inatube the air is then forced into the Bicycle Tire.
Air is put in with a pump or a compressor, either way it becomes pressurised to inflate the tire.
Because I don't know what your teacher is looking for:At a pressure above atmosphericCompressedConfined
If the pump, valve, and tube are OK - yes.
Usually the pump or compressor just takes air from the surrounding and pushes it into the tube/tire.
This shows air can be compressed so more air could be pumped in.
how much air is in the tire
Yes there most certainty is a limit to the amount of air that can be pumped into a bicycle tire. Put too much air in the tire and it will explode. The maximum air pressure for the tire is listed on the sidewall of the tire.
Because air, fluffy as it is, is still "stuff", and all stuff has weight. When you pump a tire you're putting more stuff into it, so the weight do go up.
When you are not sitting on it.
Air fille bicycle tires were invented by John Dunlop.