CHM 2045C Lecture Notes - Lecture 1: Falsifiability, Kinetic Energy, Observational Error
Document Summary
Chemistry is the science that seeks to understand the behavior and properties of matter by studying behavior of atoms and molecules. Phlogiston hypothesis states that a fire-like element is contained within all combustible materials and is released when material is burned. Lavoisier"s hypothesis states that when a substance combusts, it combines with a component of air. Hypothesis: tentative interpretation or explanation for an observation and is good if it"s falsifiable. Experiment: set of procedures that test ideas to validate or invalidate a hypothesis. Lax of conservation of mass states that in a chemical reaction matter cannot be created or destroyed. Atoms and molecules in an element determine properties of matter. Element: a pure substance that cannot be broken down by a chemical change. Compound: a pure substance formed by chemically joining two or more elements in a fixed proportion. Atoms are submicroscopic particles that build matter.
