CHEM 1127Q Lecture Notes - Lecture 1: International System Of Units, Ampere, Distillation

• School: UConn
• Department: Chemistry
• Course: CHEM 1127Q
• Professor: Dr. Cady

Document Summary

Perform experiment; make more observations (if results are no consistent with prediction, go back to hypothesis), (if results are consistent with prediction, go to contributing to body of knowledge) Contributes to body of knowledge (if further testing does not support hypothesis, go back to hypothesis), (if much additional testing yields constant observations, go to observation becomes law), (if much additional testing supports hypothesis, go to hypothesis becomes theory) Science always changes as we are proven wrong. Chemistry on the microscopic scale (atoms are really small) Mixture - homogeneous (mixture of things that look the same), heterogeneous (mixture of things that are not the same) Pure substance - element, compound (molecules, repeating units) Mass is neither created nor destroyed in a chemical reaction. Mass of the reactants is the same as mass of the products. There are 2 fundamental properties of matter. Separation by physical or chemical properties works well for pure substances and.