Final answer:
Boyle's law states that for a given amount of gas at constant temperature, an increase in volume leads to a decrease in pressure. Therefore, the correct answer is 1) decrease in pressure.
Step-by-step explanation:
According to Boyle's law, when a fixed amount of gas increases in volume, it must also decrease in pressure. Boyle's law states that the volume of a gas is inversely proportional to the pressure of the gas provided the temperature and the amount of the gas remain constant.
Simply put, if you increase the volume of a gas and maintain a constant temperature, the pressure has to fall to balance out the increase in volume.
Boyle's law states that the volume of a gas is inversely proportional to its pressure, as long as the temperature and amount of gas remain constant. This means that as the volume of the gas increases, the pressure decreases, and vice versa.
For example, if you have a balloon filled with air and you increase the volume of the balloon by blowing more air into it, the pressure inside the balloon will decrease.