CHEM 0110 Lecture Notes - Lecture 3: Antoine Lavoisier
13 Oct 2016
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Experiment: a controlled test of an idea in order to prove whether a hypothesis is valid or not. This test should be reproducible and should yield rational results. Hypothesis: an unproven explanation of an observation or phenomena. Theory: tested explanations of natural phenomena and reactions that cannot be proven. Law: a concise statement or equation that has been proven and is about fundamental relationship or regularity of nature. Matter: something that occupies space and can be perceived by our senses. Antoine lavoisier: law of conservation of mass; the total mass remains constant during a chemical change. 1. 85 grams of wood is in a seated vessel with 9. 45 grams of air. 1. 85g + 9. 45g 0. 28 g + x x= 11. 02 g. Physical states: solid: tightly packed structure, liquid: loosely packed structure, gas: very loosely packed/scattered structure. Solid to liquid is called melting, liquid to gas is called boiling.
