MSC 180 - Water Analysis

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# MSC 180 - Water Analysis - PowerPoint PPT Presentation

MSC 180 - Water Analysis. Instructor: Jacqui Jenkins Office: S204D Email: [email protected] Phone: 362-7405. Laboratory Safety. Safety Requirements. Safety Equipment. Eyewash &amp; Shower First Aid Kit. Fire &amp; Fire Safety. Fire Blanket Fire Extinguisher. Safety Equipment. MSDS

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### MSC 180 - Water Analysis

Instructor: Jacqui Jenkins

Office: S204D

Email: [email protected]

Phone: 362-7405

Laboratory Safety
• Safety Requirements
Safety Equipment
• Eyewash & Shower
• First Aid Kit
Fire & Fire Safety
• Fire Blanket
• Fire Extinguisher
Safety Equipment
• MSDS
• Material Safety Data Sheets
The Metric System
• Decimal system of measurement
• Base of 10
• History
• France, 1791
• US, Liberia, and Myanmar (Burma)
• http://lamar.colostate.edu/~hillger/
The Metric System - Prefixes
• micro = µ = one-millionth = 10-6
• milli = m = one-thousandth = 10-3
• centi = c = one-hundredth = 10-2
• deci = d = one-tenth = 10-1
• deka = dk = ten times = 101
• hecto = h = hundred times = 102
• kilo = k = thousand times = 103
• mega = M = million times = 106
The Metric System
• Length
• Meter
• Weight
• Gram
• Volume
• Liter
The Metric System - Length
• 1 micrometer (µm) = 0.000001 meter
• 1 millimeter (mm) = 0.001 meter
• 1 centimeter (cm) = 0.01 meter
• 1 decimeter (dm) = 0.1 meter
• 1 dekameter (dkm) = 10 meters
• 1 hectometer (hm) = 100 meters
• 1 kilometer (km) = 1000 meters
The Metric System – Weight (Mass)
• 1 microgram (µg) = 0.000001 gram
• 1 milligram (mg) = 0.001 gram
• 1 centigram (cg) = 0.01 gram
• 1 decigram (dg) = 0.1 gram
• 1 dekagram (dkg) = 10 grams
• 1 hectogram (hg) = 100 grams
• 1 kilogram (kg) = 1000 grams
The Metric System - Volume
• 1 microliter (µL) = 0.000001 liter
• 1 milliliter (mL) = 0.001 liter
• 1 centiliter (cL) = 0.01 liter
• 1 deciliter (dL) = 0.1 liter
• 1 dekaliter (dkL) = 10 liters
• 1 hectoliter (hL) = 100 liters
• 1 kiloliter (kL) = 1000 liters
1012 microphones = 1 megaphone

106 bicycles = 2 megacycles

2000 mockingbirds = 2 kilomockingbirds

10 cards = 1 decacards

10¯6 fish = 1 microfiche

454 graham crackers = 1 pound cake

1012 pins = 1 terrapin

10 rations = 1 decoration

10 millipedes = 1 centipede

3 1/3 tridents = 1 decadent

10 monologs = 5 dialogues

2 monograms = 1 diagram

2 snake eyes = 1 paradise

10¯6 phones = 1 microphone

106 phones = 1 megaphone

10¯2 mental = 1 centimental

10¯1 mate = 1 decimate

10¯12 boos = 1 picoboo

Conversion
• Metric English Equivalents
• 1 cm = 0.3937 in.
• 1 m = 3.281 ft = 39.37 in.
• 1 km = 0.6214 mile
• 1 L = 0.2646 gal
• 1 kg = 2.204 lbs
The Metric System
• Temperature
• Celsius (°C)
• Kelvin (K)
• Absolute zero
• 0 K
• -273.15 °C
Conversion
• K = °C + 273
• °C = 5/9(°F - 32)
• °F = 9/5(°C +32)
The Metric System
• Density
• Mass per unit volume
• D = M/V
• Mass in grams
• Volume in cubic centimeters
• g/cm3
Lab Procedures
• Recording Data/Lab Notebooks
• Ink
• Never rip out pages
• Never erase data; cross out mistakes
• Record all information, no matter how trivial
• Be specific
• Check all calculations
• And, obviously, BE NEAT
Lab Procedures
• Bunsen burners
Lab Procedures
• Glass Tubing
• Cutting
• Fire Polishing
• Bending
• Inserting into stoppers
Lab Procedures
• Transfer of Liquids
• Correct handling of glass stoppers
• Pouring liquids from beakers
Lab Procedures
• Loosening stuck stopcocks and stoppers
Lab Procedures
• Weighing/Balances
• Most important tool in a chemistry lab
• Used to determine the mass of an object
• Triple-beam balance
• Analytical balance
Precision

Reproducibility

Check by repeated measurements

Poor precision results from poor techniques

Accuracy

Correctness

Check by using a different method

Poor accuracy results from procedural or equipment flaws

Lab Procedures
Labware
• Section 2 of the handbook
• These will be displayed for the rest of the week, then returned to their respective places for the rest of the semester
• What is it?
• What’s it used for?