MSC 180 Water Analysis

1
MSC 180 - Water Analysis

• Instructor Jacqui Jenkins
• Office S204D
• Email jjenkins_at_cfcc.edu
• Phone [phone]

2
Laboratory Safety

• Safety Requirements

3
Safety Equipment

• Eyewash Shower
• First Aid Kit

4
Fire Fire Safety

• Fire Blanket
• Fire Extinguisher

5
Safety Equipment

• MSDS
• Material Safety Data Sheets

6
The Metric System

• Decimal system of measurement
• Base of 10
• History
• France, 1791
• US, Liberia, and Myanmar (Burma)
• http//lamar.colostate.edu/hillger/

7
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

8
The Metric System

• Length
• Meter
• Weight
• Gram
• Volume
• Liter

9
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

10
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

11
(No Transcript)
12
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

13

• 10 millipedes 1 centipede
• 3 1/3 tridents 1 decadent
• 10 monologs 5 dialogues
• 2 monograms 1 diagram
• 8 nickels 2 paradigms
• 2 snake eyes 1 paradise
• 2 wharves 1 paradox
• 106 phones 1 microphone
• 106 phones 1 megaphone
• 102 mental 1 centimental
• 101 mate 1 decimate
• 1012 boos 1 picoboo

• 1012 microphones 1 megaphone
• 106 bicycles 2 megacycles
• 2000 mockingbirds 2 kilomockingbirds
• 10 cards 1 decacards
• 106 fish 1 microfiche
• 454 graham crackers 1 pound cake
• 1012 pins 1 terrapin
• 10 rations 1 decoration

14
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

15
The Metric System

• Temperature
• Celsius (C)
• Kelvin (K)
• Absolute zero
• 0 K
• -273.15 C

16
Conversion

• K C 273
• C 5/9(F - 32)
• F 9/5(C 32)

17
The Metric System

• Density
• Mass per unit volume
• D M/V
• Mass in grams
• Volume in cubic centimeters
• g/cm3

18
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

19
Lab Procedures

• Bunsen burners

20
Lab Procedures

• Glass Tubing
• Cutting
• Fire Polishing
• Bending
• Inserting into stoppers

21
Lab Procedures

• Transfer of Liquids
• Correct handling of glass stoppers
• Pouring liquids from beakers

22
Lab Procedures

• Loosening stuck stopcocks and stoppers

23
Lab Procedures

• Weighing/Balances
• Most important tool in a chemistry lab
• Used to determine the mass of an object
• Triple-beam balance
• Analytical balance

24
Lab Procedures

• 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

25
(No Transcript)
26
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?
• Whats it used for?