a. volume
b. pressure
c. temperature
d. some combinations of the above (if you add more gas to the same volume of a container, then the pressure increases etc.)
As the speed of the particles in gas increases the heat of gas increases as well.
The speed of gas molecules increases as the temperature of a gas increases.
Temperature increases as pressure increases.
The impacts of temperature on gas are manifold. Increase in temperature increases the gas pressure by increasing its volume. It increases the solubility of gas and vice-verse. The viscosity of gas also increases with increase in temperature.
More gas dissolves into the liquid.
As the gas's temperature increases, its thermal energy also increases. This is because temperature is a measure of the average kinetic energy of the gas particles, and as they move faster (due to higher temperature), they possess more kinetic energy and thus the thermal energy of the gas increases.
If a fixed volume of gas increases in temperature, it must increase in volume. If the gas is in a closed system, the pressure inside that system increases instead. When the gas increases in volume, it also decreases in pressure, often rising above colder, more dense gas if possible.
It is true that, in a rigid container, when the speed of the gas molecules increases, the temperature of the gas rises. This has nothing to do with the speed or lack of speed of the gas as a whole.
As pressure increases, if temperature is constant, the gas will decrease in volume.
When the temperature of a gas increases, the average kinetic energy of the gas particles also increases. This leads to an increase in the velocity of the gas particles as they move faster on average. According to the ideal gas law, an increase in temperature causes an increase in the average speed of gas particles.
If you are talking about the solubility of gasses in a liquid then lowering the temperature will increase the solubility of the gas
As pressure increases, if temperature is constant, the gas will decrease in volume.