CHEM 208 Lecture Notes - Lecture 2: Significant Figures, Scientific Notation, Scientific Law
16 Apr 2016
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Document Summary
Step1: performing experiments: an experiment is a set of steps that are performed under controlled conditions to propose or test a hypothesis. Step2: making observations: observations can be classiied as; qualitative and quantitative. Step3: proposing a hypothesis: a tentative explanation to account for observations of an experiment. A hypothesis is valid provided that one"s assumptions to explain the observations of an experiment can be tested. Step4: conirming the hypothesis: the validity of the hypothesis needs to be conirmed via repeated and controlled experiments. To accept the hypothesis, there must be no inconsistencies between the hypothesis and the experimental observations. Step5: proposing a scientiic law: by repeatedly performing experiments and modifying the hypothesis to account for the observations from these experiments, one is able to propose a scientiic law. Certain rules apply to the expression of the numerical value and the system of units used in scientiic measurements (each to be discussed further on the following slides).
