Answer:
a. pressure increases
b. particles move faster
Step-by-step explanation:
When the temperature of a gas at constant volume increases, it means the kinetic energy of the gas particles will also increase and this means that the particles will move at a faster speed.
Also, since the particles are moving faster, it means they will be hitting the walls of the container carrying the gas at a faster rate.
And the higher the force, the higher the Pressure.