1 / 10

CH. 2 - MEASUREMENT

CH. 2 - MEASUREMENT. II. Units of Measurement (p. 33 - 39). A. Number vs. Quantity. Quantity - number + unit. UNITS MATTER!!. B. SI Units. Quantity. Symbol. Base Unit. Abbrev. Length. l. meter. m. Mass. m. kilogram. kg. Time. t. second. s. Temp. T. kelvin. K. Amount. n.

spatrick
Download Presentation

CH. 2 - MEASUREMENT

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CH. 2 - MEASUREMENT II. Units of Measurement (p. 33 - 39) C. Johannesson

  2. A. Number vs. Quantity • Quantity - number + unit C. Johannesson UNITS MATTER!!

  3. B. SI Units Quantity Symbol Base Unit Abbrev. Length l meter m Mass m kilogram kg Time t second s Temp T kelvin K Amount n mole mol C. Johannesson

  4. kilo- mega- M k 103 106 deci- BASE UNIT d meter(m) Liter (L) gram (g) 100 10-1 centi- c 10-2 milli- m 10-3 micro-  10-6 nano- n 10-9 pico- p 10-12 B. SI Units Prefix Symbol Factor C. Johannesson

  5. M V D = C. Derived Units • Combination of base units. • Volume (m3 or cm3) • length  length  length 1 cm3 = 1 mL 1 dm3 = 1 L • Density (kg/m3 or g/cm3) • mass per volume C. Johannesson

  6. D. Density Mass (g) Volume (cm3) C. Johannesson

  7. Problem-Solving Steps 1. Analyze 2. Plan 3. Compute 4. Evaluate C. Johannesson

  8. D. Density • An liquid has a volume of 25 ml and a density of 13.6 g/ml. Find its mass. GIVEN: V = 25 ml D = 13.6 g/ml M = ? WORK: M = DV M = (13.6 g/ml)(25ml) M = 340 g C. Johannesson

  9. WORK: V = M D V = 25 g 7.9 g/cm3 D. Density • Steel has a density of 7.9 g/cm3. What volume is occupied by 25 g of the metal? GIVEN: D = 7.9 g/cm3 V = ? M = 25 g V = 3.16 cm3 C. Johannesson

  10. WORK: D = M V D = 30 g 3.37 cm3 D. Density • Copper has a mass of 30 g. What is the density of copper if the volume is 3.37 cm3 GIVEN: D = ? V = 3.37 cm3 M = 30 g D = 8.9 g/cm3 C. Johannesson

More Related