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RT 21 Exam 1
RT 21 Exam 1 ELAC
| Term | Definition |
|---|---|
| Law of conservation of energy | Energy can not be created or destroyed, it can only be transferred |
| Kinetic theory | states that the atoms & molecules that make up matter are in constant motion. Temperature plays a role, hot moves more than cold. |
| States of Matter | solid, liquid, gas |
| melting point | the temperature at which melting occur |
| melting | changeover from solid to the liquid state |
| freezing | opposite of melting |
| freezing point | temperature at which the substance freezes; same a sits melting point |
| Potential Energy | is stored energy |
| Kinetic Energy | is the energy that an object possesses when it is in motion |
| Fahrenheit to Celsius | C=.55x(F-32) |
| Celsius to Fahrenheit | F=(1.8xC)+32 |
| Celsius to Kelvins | C+273=Kelvins |
| Celsius absolute zero | -273°C |
| Fahrenheit absolute zero | -280°F |
| Kelvins absolute zero | 0 Kelvin |
| Absolute pressure | a pressure scale in which the 0 point is a complete vacuum or the pressure at which all molecular motion stops. Also includes atmospheric pressure |
| Gauge pressure | 0 point is atmospheric pressure or the pressure if the atmosphere pushing down on a given point on earth |
| Negative pressure | negative or minus gauge pressure is frequently used in respiratory care to describe gauge pressure. Same as vacuum pressure |
| critical temperature | Temperature reached in which gaseous molecules cannot be converted back to a liquid no matter what pressure is exerted on them |
| critical pressure | pressure of a substance is the pressure required to liquefy a gas at its critical temperature |
| STPD | specific temperature, pressure and humidity conditions that are used to measure gases so that we can compare measurements, usually of gases made by different people at different times. |
| BTPS | measures body values verse normals |
| ATPS | measured at ambient temperature, pressure, saturated with water vapor: ambient temperature and pressure, saturated. |
| Atoms | Smallest particle of an element that retains the characteristics of that element |
| proton | a subatomic particle with a positive charge and a mass of 1 atomic mass unit and is located with in the nucleus. |
| neutron | it is a subatomic particle without an electrical charge and a mass of |
| electron | is the lightest subatomic particle and is negatively charged |
| Compounds | contains at least two different elements. |
| CaO2 | Total oxygen content - (Hbx1.34xSaO2)+(PaO2x0.003) |
| Hb | hemoglobin (carries O2) |
| 1.34 or 1.36 | carrying capacity of Hb for O2 is 1.34ml O2/gr Hb |
| DO2 | Deliver of oxygen |
| normal cardiac output | 4-8L (6L) |
| normal CaO2 | about 20 |
| volume | is the three-dimensional space inside the container holding the gas. The Sl unit for volume is the cubic metter, m3. A more common unit is L. |
| Boyle's law | P1*V1=P2*v2 |
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