Measurement I Units of Measurement w Number vs

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Measurement I. Units of Measurement w Number vs. Quantity w SI Base Units &

Measurement I. Units of Measurement w Number vs. Quantity w SI Base Units & Prefixes w Conversions w Derived Units w Density Calculations

Number vs. Quantity ö Quantity - number + unit UNITS MATTER!!

Number vs. Quantity ö Quantity - number + unit UNITS MATTER!!

SI Units Quantity Base Unit Symbol meter m Mass kilogram kg Time second s

SI Units Quantity Base Unit Symbol meter m Mass kilogram kg Time second s Temp kelvin K ampere A Length Current

SI Units Prefix Symbol Factor megakilodecicentimillimicronanopico- M k d c m n p 106

SI Units Prefix Symbol Factor megakilodecicentimillimicronanopico- M k d c m n p 106 103 10 -1 10 -2 10 -3 10 -6 10 -9 10 -12

SI Prefix Conversions 1. Find the difference between the exponents of the two prefixes.

SI Prefix Conversions 1. Find the difference between the exponents of the two prefixes. 2. Move the decimal that many places. To the left or right?

SI Prefix Conversions 532 m NUMBER UNIT 0. 532 km = _______ = NUMBER

SI Prefix Conversions 532 m NUMBER UNIT 0. 532 km = _______ = NUMBER UNIT

move right move left SI Prefix Conversions Prefix Symbol Factor megakilodecicentimillimicronanopico- M k d

move right move left SI Prefix Conversions Prefix Symbol Factor megakilodecicentimillimicronanopico- M k d c m n p 106 103 10 -1 10 -2 10 -3 10 -6 10 -9 10 -12

SI Prefix Conversions 1) 20 cm = 0. 2 _______ m 32 2) 0.

SI Prefix Conversions 1) 20 cm = 0. 2 _______ m 32 2) 0. 032 A = _______ m. A 3) 45 m = 45, 000 _______ nm 0. 0805 4) 805 dm = _______ km

Derived Units ö Combination of base units. ö Volume - length 1 cm 3

Derived Units ö Combination of base units. ö Volume - length 1 cm 3 = 1 m. L 1 dm 3 = 1 L ö Density - mass per unit volume (g/cm 3) M D= V M D V

Density ö An object has a volume of 825 cm 3 and a density

Density ö An object has a volume of 825 cm 3 and a density of 13. 6 g/cm 3. Find its mass. GIVEN: WORK: V = 825 cm 3 D = 13. 6 g/cm 3 M=? M = DV M D V M = (13. 6 g/cm 3)(825 cm 3) M = 11, 220 g

Density 1) A liquid has a density of 0. 87 g/m. L. What volume

Density 1) A liquid has a density of 0. 87 g/m. L. What volume is occupied by 25 g of the liquid? GIVEN: WORK: D = 0. 87 g/m. L V=? M = 25 g V=M D V V= 25 g 0. 87 g/m. L V = 28. 7 m. L

Density 2) You have a sample with a mass of 620 g & a

Density 2) You have a sample with a mass of 620 g & a volume of 753 cm 3. Find density. GIVEN: WORK: M = 620 g V = 753 cm 3 D=? D=M V M D V D= 620 g 753 cm 3 D = 0. 82 g/cm 3