Chapter 1 Slides No Clicker Qs

Chapter 1 Slides No Clicker Qs - chemical combustion...

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“Ok, so what is the speed of dark?” -Steven Wright
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Measurements: Evidence and the Scientific Method Scientific Method (Process of carrying out Critical Thinking ) 1) Observation/Problem 2) Hypothesis (intuitive explanation of observation/answer to problem) 3) Experiment - Gather Evidence to test hypothesis 4) Interpret Evidence 5) Confirm/Deny hypothesis – design new experiment
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Evidence Types of Evidence -Documents/artifacts (history, anthropology) -Interviews/surveys (social science) -Literature/poems/performance (humanities) -Observation of Natural Phenomena, Measurement of Quantitative Output ( Science )
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Types of Measurements in Chemistry (Units) Fundamental Units 1) mass – grams (g) (masses of subatomic particles, masses of compounds, etc.) 2) length – meters (m) (distance between atoms in a chemical structure, distance a piston is moved by a
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Unformatted text preview: chemical combustion reaction, etc.) 3) temperature – degrees Celsius (°C) or Kelvin (K) (temperature change caused by a chemical reaction, temperature of a gaseous sample, etc.) Types of Measurements in Chemistry (Units) Derived Units 1) volume – cm3 or mililiters (mL) (volume of gasesous sample, volume of gas produced in a reaction, etc.) 2) density – grams/mililiters (g/mL) (density of a substance, comparison of density of two liquids, etc.) 3) energy – kg•m2/sec2 = Joule (J) (energy given off by a chemical reaction, energy required to break a chemcial bond, etc.) note: energy changes are very often measured indirectly by measuring temperature changes 103 102 101 100 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 kilo g centi mili micro nano k m c m μ n L Metric Prefixes...
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This note was uploaded on 02/22/2012 for the course CHEM1A 1a taught by Professor Oka during the Fall '09 term at UC Riverside.

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Chapter 1 Slides No Clicker Qs - chemical combustion...

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