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u1lectout - Unit 1: Introduction to Chemistry Name: _...

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Unit 1: Introduction to Chemistry Name: __________________ Internet web site: www.unit5.org/christjs/ Safety #1 Rule: Others: No horseplay. No unauthorized experiments. Handle chemicals/glassware with respect. Safety Features of the Lab Material Safety Data Sheet (MSDS) -- -- lists Dos and Don’ts; emergency procedures Chemical Exposure acute exposure vs. chronic exposure e.g., e.g., LD 50 : lethal dosage for 50% of creatures that the chemical is tested on Example: 1
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2 Science The Functions of Science pure science vs. applied science e.g., aluminum e.g., strong lightweight good conductor risk-benefit analysis : How does scientific knowledge advance? 1. 3. 2. 4. The Scientific Method ** Key: 1. Identify an unknown. 2. Make a hypothesis : -- 3. Repeatedly experiment to test hypothesis. procedure : order of events in experiment variable : Experiment must be controlled : observation vs. inference Types of Data qualitative data quantitative data -- descriptions -- measurements e.g., e.g., conclusion : must be based on data 2
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Law vs. Theory law :
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u1lectout - Unit 1: Introduction to Chemistry Name: _...

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