Lab Equipment. Warm Up What are three tools we use in lab What are three tools we use in lab And...
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Transcript of Lab Equipment. Warm Up What are three tools we use in lab What are three tools we use in lab And...
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Lab Equipment
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Warm Up
• What are three tools we use in labAnd their functions?
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Warm Up
Name three lab safety rules. What should you wear if handling
chemicals?• Describe how you should cut
materials.
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Beaker
Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated.
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Erlenmeyer Flask
Erlenmeyer flasks hold solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.
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Florence Flask
Rarely used in first year chemistry, it is used for the mixing of chemicals. Narrow neck prevents splash exposure.
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Graduated Cylinder
A graduated cylinder is used to measure volumes of liquids.
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Test Tubes13 x 100 mm test tubes
10 x 75 mm test tubes
Ignitiontube
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Test Tube Holder
A test tube holder is useful for holding a test tube which is too hot to handle.
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Test Tube Brushes
Test tube brushes are used to clean test tubes and graduated cylinders.Forcing a large brush into a small test tube will often break the tube.
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Test Tube Racks
Test tube racks are for holding and organizing test tubes on the laboratory counter. Plastic racks may melt in contact with very hot test tubes.
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Medicine Dropper
A medicine dropper is used to transfer a small volume of liquid (less than one mL).
On top of each medicine dropper is a “rubber bulb”
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Forceps
Forceps (or tweezers) are used to pick up small objects.
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Funnel
A funnel is used to aid in the transfer of liquid from one vessel to another.
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Mohr Pipet
A Mohr pipet measures and delivers exact volumes of liquids.
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Beaker Tongs
Beaker tongs are used to move beakers containing hot liquids
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Bunsen Burner
Bunsen burners are used for the heating of nonvolatile liquids and solids.
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Crucible
Crucibles are used for heating certain solids, particularly metals, to very high temperatures.
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Crucible Tongs
For handling hot crucibles; also used to pick up other hot objects. NOT to be used for picking up beakers!
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Slide
Glass plates provide a surface for semi-micro scale experiments, such as drop reactions and testing of acids and bases.
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Strikers
Strikers are used to light Bunsen burners.
The flints on strikers are expensive. Do not operate the striker repeatedly just to see the sparks!
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Petri Dish
Used to grow cultures, (bacteria).