Chemistry 1302A/B Lecture Notes - Lecture 1: Gas Laws

• School: Western University
• Department: Chemistry
• Course: Chemistry 1302A/B
• Professor: Keith Griffiths

Document Summary

Solid: molecules / ions in a xed position (vibrating) forces holding the lattice together determine melting point. Liquid: atoms & molecules are still touching but they are moving around. Gas: forces that hold atoms & molecules together are exceeded each molecule has signi cant translational energy. Move freely and expand to ll container. Pressure is due to collisions with the walls of the container. Ideal gas law describes relationship between amount of gas, temperature, volume, & pressure. Increased container size less collisions lower pressure. The pressure is not too high; at low pressure, the volume of the gas atoms or molecule is very small compared to the volume of the container gas molecules have no volume. The temperature is relatively high; the gas molecules do not interact with each other, so the forces between the molecules which could cause condensation are negligible. P x v = constant n x t.