CHM 1045 Lecture Notes - Lecture 1: International System Of Units, Kilogram
Document Summary
Chemistry the study of matter and the changes it undergoes (basis for all the sciences) The scientific method: observe 2) research 3) make a hypothesis 4) test hypothesis 5) assess results 6) draw conclusion 7) Matter everything that has mass and takes up space. Mixture a combination of two or more substances that retain their individual identities. Element substance that cannot be broken down into smaller pieces. Physical properties can be observed w/o changing the chemical composition of the substance. Chemical properties a property that can only be observed by reaction that changes the composition of the substance. Intensive properties independent of the amount of substance (color) Extensive properties dependent on the amount of substance (mass, volume) Amount of substance meter kilogram seconds kelvin mole. Accuracy correct known value, being able to hit that value. Precision hitting the same spot over and over.
