1 / 9

Understanding Units of Measurement: SI Units and Density Calculation Techniques

This resource provides a comprehensive overview of measurement units, focusing on the International System of Units (SI). It distinguishes between quantity and number, detailing base units such as length (meter), mass (kilogram), time (second), temperature (kelvin), and amount (mole). It further explores derived units like volume and density, including practical examples of problem-solving steps for calculating density. Get insights into how to compute mass from volume and density, with explicit formulas and sample problems for better understanding.

quyn-case
Download Presentation

Understanding Units of Measurement: SI Units and Density Calculation Techniques

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. 5 - MEASUREMENT II. Units of Measurement

  2. A. Number vs. Quantity • Quantity - number + unit 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

  4. mega- kilo- k M 106 103 BASE UNIT deci- --- d 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

  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

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

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

  8. D. Density • An object has a volume of 825 cm3 and a density of 13.6 g/cm3. Find its mass. GIVEN: V = 825 cm3 D = 13.6 g/cm3 M = ? WORK: M = DV M = (13.6 g/cm3)(825cm3) M = 11,200 g

  9. WORK: V = M D V = 25 g 0.87 g/mL D. Density • A liquid has a density of 0.87 g/mL. What volume is occupied by 25 g of the liquid? GIVEN: D = 0.87 g/mL V = ? M = 25 g V = 29 mL

More Related