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
• 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
Bunsen Burner
Ring Stand w/ Clamp
• Used as a steady base• Many different clamps
and instruments will attach to the stand
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?
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Which is best for measuring liquids?
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1. Beaker
2. Graduated Cylinder
3. Flask
4. Crucible
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What is this?
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1. Graduated Cylinder
2. Beaker
3. Triple-beam Balance
4. Test Tube
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What is this NOT used for?
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1. Heating
2. Measuring
3. Pouring
4. Storing
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What is this?
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1. Graduated Cylinder
2. Funnel
3. Triple-beam Balance
4. Test Tube
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What should you do to a triple-beam balance before weighing a substance?
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1. Use new paper
2. Zero the balance
3. Move all weights to zero
4. All of the above
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