CHE-1101 Chapter Notes - Chapter 1: Chemical Substance, Scientific Law, International System Of Units
Document Summary
Scientific method: process of gathering information and formulating explanations. Observations: a statement that accurately describes something we see, hear, taste, smell or feel. Reproducible: repeated and the same results are obtained each time. Data: the observations made during an experiment are referred to. Conclusion: statement that is based on what we think about a series of observation to be considered valid, they have be reproducible. Law/ scientific law: broad generalization, always proven right, often expressed in mathematical expression. Theoretical models: model created to help diagram / explain / not always true. Theory: well tested explanation of the behavior of nature. The atomic theory as a model of nature all chemical substances are composed of submicroscopic materials called atoms. Matter: anything that occupies space and has mass. Mass: how much matter there is in a given object. Weight: the force with which the object is attracted by gravity. Chemical reactions: transformations that alter the chemical compositions of substances.
