Certified Hyperbaric Technologist Practice Test 2025 – All-in-One Guide to Exam Success!

According to Charles' Law, which describes the relationship between volume and temperature in gases, if the volume of a gas increases at constant pressure, the temperature of the gas also increases. This relationship is based on the principle that gas molecules move more rapidly as temperature rises; therefore, when the volume in which they are contained expands, the energy of the gas molecules will increase, leading to a rise in temperature.

In the context of a flexible container, such as a balloon or a gas bag, when the volume increases (for example, when the container expands), the gas molecules inside gain kinetic energy, thus raising the overall temperature of the gas. This phenomenon is critical in understanding how gases behave under different conditions, particularly in hyperbaric settings where pressure and volume changes can significantly impact temperature and the overall behavior of gases.