CHEM 100 Chapter Notes - Chapter 5: Pressure Measurement, Homeostasis, Office Of Gas And Electricity Markets
Document Summary
To maintain homeostasis, the body"s blood-oxygen concentration must remain high and the carbon. Chapter 5 the physical properties of gases dioxide concentration low. (cid:1870)(cid:1871)(cid:1871)(cid:1873)(cid:1870)=(cid:3033)(cid:3042)(cid:3045)(cid:3030)(cid:3032) (cid:3045)(cid:3032) same but the area decreases. Differences in pressure cause the movement of gases from one place to another. Pressure a force applied over a unit area, and it is measured in units such as pounds per square inch, kilograms per square meter, or grams per square centimeter. Pressure will increase if the force increases but the area remains constant or if the force stays the. Atmospheric pressure the result of their mass pressing against earth"s surface. The variations in atmospheric pressure are caused by variation in the mass of the atmospheric gas column over a particular location. Cold air is more dense than hot air; therefore it is heavier and leads to higher local atmospheric pressure. The higher the elevation, the shorter the air column above that location and the lower the average atmospheric pressure.
