Laboratory Equipment
The tools you use to
increase your understanding
Beakers
• Used for
– Pouring, storing,
mixing, heating,
dispensing
• NOT used to measure
• Has a “beak” to aid
pouring
Test Tube
• Used for storing, mixing, heating
• NOT for measuring
• Should be held with tongs, clamps
or a ring-stand clamp NEVER
with your hands
Flask
•
•
•
•
•
No beak
Used for storing, heating, etc.
Not for measuring
Many different shapes
Should not be held by hands
Graduated Cylinder
• Used to measure liquids
• Not for reactions
• Read from the curve of the
meniscus
Meniscus
Curved shape of a liquid stored in a cylinder
Caused by:
adhesion between the liquid and its container
cohesion between particles of the liquid
Bunsen Burner
• Turn on gas FIRST
• Control gas and air to
create a nice blue cone
of flame
• NEVER put glassware
into the flame, as the
glass will weaken and
then melt
Ring Stand w/ Clamp
• Used as a steady base
• Many different clamps
and instruments will
attach to the stand
Triple-Beam Balance
Triple-Beam Balance
• Used to measure mass
• Moving the weight
farther from the pan
increases the leverage
• Be sure to zero the
balance for each mass
• Use paper to keep
materials from sticking
to the balance pan
Let’s see what you’ve learned…
• Answer the following questions about
laboratory equipment using your keypad
Ready?
10
Which is best for measuring liquids?
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0%
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0%
0%
Beaker
Graduated Cylinder
Flask
Crucible
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What is this?
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Graduated Cylinder
Beaker
Triple-beam Balance
Test Tube
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What is this NOT used for?
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Heating
Measuring
Pouring
Storing
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What is this?
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Graduated Cylinder
Funnel
Triple-beam Balance
Test Tube
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What should you do to a triple-beam
balance before weighing a substance?
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Use new paper
Zero the balance
Move all weights to zero
All of the above
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What is this effect called?
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Meniscus
Musculum
Mensa
Mosca Quito
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