CH 101 Lecture Notes - Lecture 1: Gas Balloon, Hydrogen Atom, Atomic Number
23 Nov 2016
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Document Summary
Chemistry: the science that seeks to understand the properties of matter by studying the structure of the particles that composes it. Matter: matter: anything that takes up space and has mass. Composed of atoms or molecules: atoms: smallest particle still characterizing a chemical element. Determine the shape and properties of matter: molecules: made of more than 1 atom, joined together with bonds. Hydrogen atom oxygen atom hydrogen atom: extremely tiny. 1 droplet of water = 100 million billion molecules of water. Classifying matter: based on the particles that compose it. Solid (s: no freedom of motion, shape: rigid, does not take shape of container, packed very close to one another, not compressible. Liquid (l: some freedom of motion, takes shape of container, but cannot escape container, packed closely to one another, not compressible. Gas (g: free to move, takes shape of container, not packed closely: a lot of empty space between gas particles. Matter: state, composition number of particles/components.
