measurement - a Record mass of objects listed a Measure...

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1 Measurement a English system a length: inches, feet a mass: ounces, lbs a Volume: pints, gallons a temp: ° F a Metric system a length: meters a mass: kilograms a volume: liters a temp: ° C, ° K 2 Metric Units a Conversion of metric units and expression in scientific notation 10 3 10 2 10 1 10 0 10 -1 10 -2 10 -3 10 -4 10 -5 10 -6 10 -7 10 -8 10 -9 . . . . . . . . . . . . . K H D base d c m µ n gram, liter, meter 3 Length a Take meter stick and identify: ` m, dm, cm, mm. a Area = length x width a Dime measurement: ` measure one dime, calculate the rest
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4 Volume a Pure water: ` 1cc = 1ml = 1g 1dm 3 = 1L = 1Kg a glassware, know how to read markings on: ` beakers ` graduated cylinders ` graduated pipettes ` Erlenmeyer flasks 5 Volume cont. a meniscus (water’s adhesive property) a pipette filling device - pump a know which pipette size is best for specified volumes 6 Mass a Know how to use: ` triple beam balance ` electronic scale
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Unformatted text preview: a Record mass of objects listed a Measure mass of volume of water 7 Temperature a At sea level: ` freezing point = ° C 32 ° F ` boiling point = 100 ° C 212 ° F Determine temperature of four water baths in ° C and convert to ° F. Convert real life applications. a Know formulas for temperature conversions between ° F and ° C. 8 Temperature a ° F = 9/5 ° C + 32 a ° C = 5/9 ( ° F – 32) a Kelvin scale (K) ` ° K is absolute zero, all molecular motion ceases ` ° K = -273 ° C so ° K = ° C + 273 9 Statistical Terms a Mean : average of measurements a Median : middle value a Range : the smallest to largest values a Deviation : + or – from the mean a Variance : sum of deviations 2 a Std. Deviation : sq.root of variance...
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