The key to understanding science. Students will… … identify the difference in a quantity and a...
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![Page 1: The key to understanding science. Students will… … identify the difference in a quantity and a unit. …Distinguish the SI unit and their use. …Perform.](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649efc5503460f94c0f692/html5/thumbnails/1.jpg)
Measurement and
Calculations
The key to understanding science
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Students will… … identify the difference in a quantity and a
unit. …Distinguish the SI unit and their use. …Perform Density Calculations. …Calculate Conversion Factors.
Learning Goals
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Length Mass Time Temperature Amount of Matter Electric Current Luminal intensity
The SI base Units
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Symbol: l Unit Name: Meter Unit Symbol: m
Length
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Symbol: m Unit Name: Kilogram Unit Symbol: kg
Mass
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Symbol: t Unit Name: Second Unit Symbol: s
Time
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Symbol: T Unit Name: Kelvin Unit Symbol: K
Temperature
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Symbol: n Unit Name: Mole Unit Symbol: mol
Amount of Substance
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Symbol: I Unit Name: ampere Unit Symbol: A (sometime amp)
Electric Current
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Symbol: Iv Unit Name: Candela Unit Symbol: cd
Luminosity
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Prefix Unit symbol Value Reference
Mega- M 10^6 Roughly 600 miles
Kilo- k 10^3 .6 miles
Deka- da 10^1 330 yards
Base - 10^0 39 inches
Deci- d 10^-1 3.9 inches
Centi- c 10^-2 .39 of an inch
Milli- m 10^-3 Wire of a paper clip
Micro- μ 10^-6 hair
Nano- n 10^-9 bacteria
Pico- p 10^-12 The chances of winning Powerball
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Area Volume Density Molar Mass Molar Volume Energy
SI Derived Units
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Symbol: A Unit Name: square meter Unit Symbol: m ²
Formula: Varies◦ Rectangle: length x width
Area
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Symbol: V Unit Name: cubic meter Unit Symbol: m³
Formula: Varies ◦ Rectangle: Height x width x length
Volume
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Symbol: D Unit Name: kilograms per cubic meter Unit Symbol: kg/ m³
We use grams so it will be g/cm³
Density is the ratio of the mass to the volume of a sample of matter.
Density
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Symbol: M or MM or MW Unit Name: kilograms per mole Unit Symbol: kg / mol
We will use g/mol normally
Molar Mass
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Symbol: Vm
Unit Name: cubic meters per mole Unit Symbol: m³/mole
We will use cm³/mol in this class.
Molar Volume
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Symbol: E Unit Name: Joule Unit Symbol: J
Formula: Force x Length
Energy
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Are ratios base on the equality of two different units to be converted into one another.
4quarters = 1 1 Dollar
Conversion Factors
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Is the method that allows you to solve problems using measurements.
Dimensional Analysis
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Significant Figures Scientific Notation And….. The Calculator tool for good or
secret threat to mankind.
All that and More in
Next Time in Chemistry