Chem 1211 2nd Edition Lecture 1 Outline of Last Lecture I Introduction to Class II Received Syllabus Outline of Current Lecture I Matter II Scientific Method III Scientific or Natural Laws Current Lecture I II III What properties define matter a Takes up space b Has mass c Made up of atoms d Density Scientific method a Observation b Hypothesis a tentative explanation or prediction based on experimental observations c Experiment d Theory a well tested unifying principle that explains a body of facts and the laws based on them It is capable of suggesting new hypotheses that can be tested experimentally e Law A concise verbal or mathematical statement of a behavior or a relation that seems always to be the same under the same conditions Scientific or Natural Laws a Conservation of matter matter can be changed but not created or destroyed b Conservation of energy energy cannot be created or destroyed c Conservation of Matter and Energy has to do with the big picture in the universe matter and energy cannot be created or destroyed d Einstein s theory of relativity E mc 2 AKA energy mass x constant IV i Has to do with nuclear energy which we will discuss later ii Energy holds protons and nucleons together Example According to the law of conservation of matter in the reaction C2H6 3O2 CO2 CO 3H2O which masses are equal a Answer C2H6 3O2 CO2 CO 3 H2O
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