laboratory equipment mrs. callender september 2010 unit 1 - laboratory
TRANSCRIPT
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Laboratory Equipment
Mrs. Callender
September 2010
Unit 1 - Laboratory
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Lesson Essential Question
What type of equipment will I be using in lab?
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Pour, Mix, Heat, Cool liquids in beakers.
Never measure volumes in a beaker.
Beaker
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Pour, Heat, Cool liquids. Used to heat liquids and solids that will most likely
release gases and spatter.
Erlenmeyer Flask
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How do I cover a beaker?
Watch Glass Glass Plate
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Graduated Cylinders
Used to measure liquids
accurately.
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Test Tubes and Test Tube Rack
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Test Tube Brushes
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These are used in place of test tubes when smaller volumes are being reacted.
24 Well Microplate
96 Well Microplate
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For dropping different amounts of liquid use….Medicine Dropper Microtip or thin stem
pipette
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Forceps or Tweezers
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Used to heat in a chemistry laboratory.
Bunsen Burner and Hose Connector
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Spark Lighter
Used to light the Bunsen Burner.
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You can also “cook” using a
Hot Plate.
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Test Tube Holder
Use this apparatus when heating a test tube.
Remember- Do not aim a test tube at anyone.
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Ring Stand
This is used to attach clamps and other apparatus that you will view next.
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Extension Clamp
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You can use a….
Right Angle ClampIron Ring
Wire Gauze
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Heating Setup
This is what it looks like when
you heat the contents of a
beaker.
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You could also attach a…
Thermometer Holder Thermometer
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This could also be attached to a
ring stand.
Reminder – never let the
thermometer touch the bottom of a
piece of glassware being heated.
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To heat substances at a very high
temperature use a Crucible and
Lid.
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To hold a hot crucible use…
Crucible Tongs
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How do I use crucible tongs?
To hold lid…. To hold Crucible…
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To heat a crucible you will also need a Clay Triangle.
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Crucible with Lid Setup
Crucibles are used to heat substances to very high temperatures.
Notice the following equipment:
Ring Stand, Iron Ring, Clay Triangle, Bunsen Burner, Crucible and Lid and Crucible Tongs.
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Used to evaporate liquids from solids under high temperatures.
Evaporating Dish
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How do hold glass when it is hot?
Beaker TongsTest Tube
Holder
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Powder Funnel – used for dry solids.
Filter Funnel – used to filter solids from liquids
with filter paper.
Powder Funnel
Filter Funnel
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Filter Funnel Setup
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How do we stir chemicals?
Stirring RodRubber
Policeman
Works like a cake spatula. Allows you to scrape solids out of containers.
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Where does the name “Rubber Policeman” come from?
The name "rubber policeman" comes from the 19th-century German chemist Carl Remigius Fresenius, who explained that chemists could remove solids from the walls of glass beakers with an instrument he called a "policeman. The police are always thorough so that’s where he got the idea.
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Two Ways to Mass Solids
Triple Beam Balance Electronic Balance
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To Mass Solids you will also
need….
Weigh Boats Spatula/Scoopula
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Pinch Clamp
Used to pinch off the flow or air or water in a hose.
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Grease Pencil
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Triangular File
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Flame Spreader