Dates

- P4 – Wednesday, January 24th
- P5 – Thursday, January 25th
- P7 – Thursday, January 25th

Recap – Graph & Meaning

- slope of the line
- intercept – should it be (0,0)

New Idea – MOLES

- word = number
- 1 mole = 6.02 x 10
^{23} - examples

How big is a mole?

- If I start with a mole of dollar bills and spend a million dollars every second, how long would it take for the money to run out (years)? Note: this is a dollars-to-years conversion using dimensional analysis (units!)

Homework

- Ch. 3 Notes (sections 1, 2, 3)
- No need to wrtite out examples
- PDF to Schoology

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