Unit 1 - MEASUREMENT III. Unit Conversions

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Presentation transcript:

Unit 1 - MEASUREMENT III. Unit Conversions SI Prefix Conversions and Metric Measurements Dimensional Analysis C. Johannesson

B. Dimensional Analysis The “Factor-Label” Method Units, or “labels” are canceled, or “factored” out C. Johannesson

B. Dimensional Analysis Steps: 1. Identify starting & ending units. 2. Line up conversion factors so units cancel. 3. Multiply all top numbers & divide by each bottom number. 4. Check units & answer. C. Johannesson

B. Dimensional Analysis Lining up conversion factors: = 1 1 in = 2.54 cm C. Johannesson 2.54 cm 2.54 cm 1 = 1 in = 2.54 cm 1 in 1 in

B. Dimensional Analysis 4) Your European hairdresser wants to cut your hair 8.0 cm shorter. How many inches will he be cutting off? cm in C. Johannesson 8.0 cm 1 in 2.54 cm = 3.2 in

B. Dimensional Analysis How many milliliters are in 1.00 quart of milk? Start w/ qt units End w/ mL units C. Johannesson 1.00 qt 1 L 1.057 qt 1000 mL 1 L = 946 mL  qt mL

How many minutes are there in 380 seconds?

A MOLE IS A UNIT!