CHEM 17 Lecture Notes - Lecture 1: Chemical Change, Scientific Method, Decimal Mark

• School: UCLA
• Department: Chemistry and Biochemistry
• Course: CHEM 17
• Professor: Scerri, Eric

Document Summary

Lecture 1, 2, & 3- chemistry and measurement. The study of the composition and structure of materials and of the changes that materials undergo. An observation of natural phenomena carried out in a controlled manner so that the results can be duplicated and rational conclusions obtained. A concise statement or mathematical equation bout a fundamental relationship or regularity of nature. Hypothesis - tentative explanation of some regularity or nature. Theories are not vague ideas that turn into laws theory is more powerful and important than a law. The total mass remains constant during a chemical change or reaction. Solid characterized by rigidity; fixed shape and volume. Relatively incompressible fluid; fixed volume, no fixed shape. Change in the form of matter but not in its chemical identity. A change in which one or more kinds of matter are transformed into a new kind of matter several kinds. A characteristic of a material involving a chemical change.