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Metric System . The Scientific Way to Measure. Base units. Meter (m)- measure length Gram (g)- measures mass Kelvin (k)- measure heat Second (s)- measures time Mole- (mol) measures particles ex, atoms molecules Liter (L) measures volume or cm 3. Metric Prefixes.

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Presentation Transcript
Metric system

Metric System

The Scientific Way to Measure


Base units
Base units

  • Meter (m)- measure length

  • Gram (g)- measures mass

  • Kelvin (k)- measure heat

  • Second (s)- measures time

  • Mole- (mol) measures particles ex, atoms molecules

  • Liter (L) measures volume or cm3


Metric prefixes
Metric Prefixes

  • Micro (μ) 1/1,000,000 or 1.0 X 10-6

  • Milli (m) 1/1000 or 1.0 x 10-3

  • Centi (c) 1/100 or 1.0 x 10-2

  • Deci (d) 1/10 or .1

  • Deka (D) 10

  • Hekto (H) 100

  • Kilo (K) 1000 or 1.0 x 103

  • Mega (M) 1,000,000 or 1.0 x 106


Conversion problem
Conversion Problem

  • Use conversion factors to convert from one unit to another

  • Are expressed as fraction, which represent absolute relationships

  • For example:

  • 1 dollar/100 pennies, 1 dollar/4 quarters, 1 dollar/ 10 dimes

  • 1 foot/12 inches


Practice
Practice

  • 1.0 meters = ? Cm

  • 12 DL = ? mL

  • 155 dg = ? Kg


Density
Density

  • Density is equal to mass divided by volume

  • D = m/V

  • Volume= l x w x h or liters

  • If an object masses 114g and has the volume of 10.0 cm3 what is its density

  • D=


Density practice
Density Practice

  • Mass- 3.1 g, Volume 0.35 cm3 D= ?

  • Mass- 14 g, Density- 10.5 g/cm3 Volume= ?


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