When applying Boyle's Law, what condition must be maintained?

Boyle's Law states that for a given amount of gas at constant temperature, the pressure of the gas is inversely proportional to its volume. This means that if the volume increases, the pressure decreases, and vice versa, as long as the temperature remains unchanged. Therefore, maintaining a constant temperature is crucial for Boyle's Law to accurately describe the relationship between pressure and volume.

In this scenario, if the temperature were to change, it would affect the kinetic energy of the gas molecules and lead to changes in pressure and volume that are not accounted for by Boyle’s equation (P1V1 = P2V2). This law applies specifically to conditions where only pressure and volume are variable while maintaining a constant temperature, ensuring that the relationship they exhibit is a true reflection of Boyle's findings.