Kinetic Molecular Theory

Gases behave according to the kinetic molecular theory, which has five assumptions that describe the behavior of gases. The first assumption states that gases consist of a large number of tiny spherical particles that are spread far apart from one another compared to their size. The second assumption states that gas particles are in constant motion in random directions. The third assumption states that gas molecules in a container have elastic collisions. As the collisions increase, so does the pressure of the gas. The fourth assumption states that gases do not exhibit any of the intermolecular forces. The final assumption states that the average kinetic energy of gas particles is dependent upon the temperature of the gas.

During this topic, you learned how pressure, volume, temperature, and the amount of gas are measured and converted. While these conversions are not complicated, you will need to remember the standard units for each. Temperature conversions are completed through addition and subtraction. Pressure conversions are completed using dimensional analysis.