lecture 1

lecture 1 - Chemistry 105A Prof. Douglas Magde If you are...

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Unformatted text preview: Chemistry 105A Prof. Douglas Magde If you are in 105B, you may either go away and return at 1:30, or you may just stay and listen quietly. Safety -- Some Horror Stories 1. The impaled hand. 2. The acid shower 3. The glass Claymore 4. The eyes take a bath 5. The sad case of my cousin Syllabus Corrections Correct the TA assignments Correct the statement about the first report Correct the information about expt. B1 Syllabus I Its also on WebCT Read it now, and read it again when it is time to prepare reports There will be advice about reports in lecture when the time comes This is a lab course. If you never submit a report you could get a D; but if you never come to lab , you will get an F Syllabus II Schedule and Deadlines Procedures for the stockroom Waste Notebooks Duplicate pages Academic integrity & Use of Turn-It-In Experiments A, B, C, D, and E Procedure for Check-In Line up to get a tag from Magde You may go to the hook board to choose an experiment by hanging your tag on a hook and waiting to see who decides to work with you, or You may find a partner first and sign up together You may get advice from the TAs who will be glad to show you around and help you choose an experiment First Homework Due next Monday. You may ask for help during or after lab hours this week. Significant Figures: Communicating uncertainty Graphs: Communicating information hard to put into words Significant Figures 1 They are a way to indicate uncertainty without the bother of formal notation They are a little vague: the error might be less than of the least significant figure, or it might be 1 or 2 or 3 in the last place. If more than that, you should probably drop one more figure. You can use propagation of error to find how many sig figs to use for a complicated calculation, but simpler rules are usually enough. Significant Figures 2 For addition and subtraction, keep the same decimal places, after allowing for powers of...
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This note was uploaded on 05/03/2011 for the course CHEM 114C taught by Professor Alexanderhoffmann during the Spring '08 term at UCSD.

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lecture 1 - Chemistry 105A Prof. Douglas Magde If you are...

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