gas
It's a gas.
The same as the air outside the tyre.
Air in a tire is compressed air. Compressed from the weight of the vehicle and against itself in the tire.
As the air temperature outside the tire increases, the kinetic energy of air molecules also increases, leading to higher pressure inside the tire. Conversely, if the temperature decreases, the kinetic energy decreases, resulting in lower pressure inside the tire. This change in pressure is described by the ideal gas law, which states that pressure is directly proportional to temperature when volume and amount of gas are constant.
There is no gas in a tire pump, only air.
The phase change that occurs when air freshener is sprayed is from liquid to gas. The air freshener is in liquid form inside the container, but when it is sprayed, it is released into the air as a gas or aerosol.
Inside a balloon there is gas. This gas is normally helium if you want the balloon to fly high, but hydrogen also works.
When you pump air into a tire, you compress the air, reducing its volume. According to the ideal gas law, compressing a gas increases its pressure and temperature. The work done by the pump on the air molecules also generates heat, further raising the temperature. As a result, the air inside the tire becomes warmer as it is compressed.
Because the air inside the tire is under pressure. Gas always flows from a region of higher pressure to a region of lower pressure. As the pressure inside the tire is greater than the pressure outside, the air always comes out of the bicycle tyre.
On a hot day, the temperature of the air inside a tire rises, causing the air molecules to move more vigorously and collide with the tire walls more frequently. According to the ideal gas law, as temperature increases, the pressure of a gas also increases if the volume remains constant. This results in higher air pressure within the tire. Additionally, increased heat can also lead to expansion of the tire materials, further contributing to the rise in pressure.
gas
It's a gas that is inside a liquid (the bubble is the liquid).