Final answer:
Placing an inflated balloon in the freezer results in a decrease in the kinetic energy of the gas particles inside the balloon, leading to a decrease in volume, not an increase in pressure, volume, or number of gas collisions, nor a decrease in the moles of gas.
Step-by-step explanation:
When an inflated balloon is placed in the freezer, the kinetic energy of the gas particles would decrease. According to Charles's Law, which relates volume and temperature, if the temperature of a gas decreases while the pressure remains constant, the volume of the gas also decreases. Therefore, as the gas inside the balloon cools in the freezer, its volume shrinks. This is because the particles move slower and have less energy, leading to fewer collisions with the walls of the balloon with less force.
In this scenario, options A (increase in pressure), B (increase in volume), and C (increase in the number of gas collisions) are incorrect. Option E (decrease in moles of gas) is also incorrect as the number of gas particles (moles) remains constant. Thus, the correct answer is D: the kinetic energy of the gas particles would decrease.