Boyle's Law/Absolute Zero
THE MOST DIRECT AND ACCURATE METHOD OF ILLUSTRATING THE BASIC RELATIONSHIPS BETWEEN PRESSURE, VOLUME AND TEMPERATURE OF GASES
A calibrated syringe is connected to a direct-reading pressure gauge. As the volume of the gas in the syringe is varied, the entire class sees the corresponding pressure changes projected clearly on the screen. Results are quantitatively accurate and
hyperbolic curve when graphed. This quick and simple method eliminates the conceptual jump
of using a volume change to represent a pressure change as required by the J tube.
mercury is needed and there are no friction problems. Comprehensive Study Guide.
ABSOLUTE ZERO DETERMINATION
A one-piece metal sphere is connected to the direct-reading pressure gauge of the unit projected on the screen. When the sphere, containing a gas, is immersed in water at various temperatures, students can read the pressure changes directly off the scale on the screen. When temperature vs. pressure readings are graphed, Absolute Zero is determined by extrapolation.
Complete overhead projectual and Study Guide