CHEM 151 Chapter Notes - Chapter 1: Covalent Bond, Chemical Element, Bohr Model
20 Aug 2016
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Document Summary
The assumption that every single substance in our surroundings has at least one differentiating characteristic that makes it unique is at the base of chemical analysis. Models are simplified representations of objects or processes built to better describe, explain, predict and even control their properties and behavior. Helps us explain why gases and liquids exert pressure on the walls of their containers. This pressure can be seen as the result of the force per unit area exerted by particles of the fluid that collide with the particles of the container. The faster the particles move, the larger the pressure they create. The average speed of particles depends on two main variables: the temperature of the system (t) and the mass of the individual particles (m) Temperature is seen as a measure of the average kinetic energy per particle Particles attract each other at relative long distances but repel each other when they come into close proximity.
