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Unformatted text preview: Chem 110 5/17 Lecture notes rewrite Chemistry-a study of the matter -interested in the changes and composition that it undergoes Matter-anything that has space Space=volume matter takes up *Matter has particular structure and chemistry tries to understand the structure. Composition-made up of atoms (ex: natural gas) Structure- how the components are held together (the matter will undergo a change) States of matter: 1. Gas-indefinite volume and indefinite shape a. Lots of movement and no attractive force 2. Liquid-average kinetic energy (ke), average attractive force (af) a. Some energy and some movement b. Liquid is the inbetween for gas to solid 3. Solid-it has a definite shape and definite volume a. It has little to no kinetic energy b. Particles are next to each other, not moving or moving very little, BIG ATTRACTIVE FORCE. A+B--------- C+D Reactants products Same quantity same quantity 20g 20g *A summary of your observations becomes your law-then you come up with a tentative explanation (hypothesis) Observation, law, hypothesis Hypothesis-an idea to have to sell to the scientific community...
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- Fall '11