CHM 101 Lecture Notes - Lecture 1: Kinetic Theory Of Gases, Intramolecular Force, Intermolecular Force
Document Summary
Chemistry study of matter and the changes it undergoes. Definite shape? no liquid (l) yes solid (s) yes no yes. Compressible by few % quantitative seawater contains approx. These careful observations and measurements can lead to hypotheses, theories, and laws that allow scientists to categorize and explain observations. Law summarize a body of observations ex. Law of conservation of matter: matter is neither created nor destroyed in chemical reactions ex. 4 g of hydrogen reacts with 32 g of oxygen to form 36 g of water. Atomic theory atoms are neither created not destroyed in chemical reactions (they are just rearranged) example: draw reaction of 2 h2(g) + o2(g) 2 h2o(g) Laws usually precede theories because they do not have to explain. Hypothesis educated guess to explain observations or baby theory followed by more experimentation. Example of a theory kinetic molecular theory atoms, molecules, ions are in constant random motion unless constrained.
