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Questions and Answers
What are test tubes used for?
What are test tubes used for?
Holding small quantities of liquids or solids
Test tubes are ideal for measuring precise volumes.
Test tubes are ideal for measuring precise volumes.
False
A test tube rack is used to hold test tubes.
A test tube rack is used to hold test tubes.
True
Why should you not place hot test tubes on a test tube rack?
Why should you not place hot test tubes on a test tube rack?
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What is a test tube holder used for?
What is a test tube holder used for?
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You should squeeze a test tube holder while holding a test tube.
You should squeeze a test tube holder while holding a test tube.
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What is a test tube brush used for?
What is a test tube brush used for?
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When using a test tube brush you should push hard to get all the residue out.
When using a test tube brush you should push hard to get all the residue out.
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What are beakers generally used for?
What are beakers generally used for?
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Beakers are the best tool for measuring precise volumes.
Beakers are the best tool for measuring precise volumes.
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What are Erlenmeyer flasks generally used for?
What are Erlenmeyer flasks generally used for?
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Erlenmeyer flasks are the best tool for measuring precise volumes.
Erlenmeyer flasks are the best tool for measuring precise volumes.
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What is a watch glass primarily used for?
What is a watch glass primarily used for?
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Watch glasses are used for observing, holding and measuring volumes.
Watch glasses are used for observing, holding and measuring volumes.
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What is a graduated cylinder mainly used for?
What is a graduated cylinder mainly used for?
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Graduated cylinders can be heated.
Graduated cylinders can be heated.
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What is a scoopula used for?
What is a scoopula used for?
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Scoopulas are used for measuring the mass of a solid.
Scoopulas are used for measuring the mass of a solid.
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Spatulas are suitable for stirring solutions.
Spatulas are suitable for stirring solutions.
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What are beaker tongs used for?
What are beaker tongs used for?
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It is important to make sure you do not have a good grip before using beaker tongs.
It is important to make sure you do not have a good grip before using beaker tongs.
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What is a balance (scale) used for?
What is a balance (scale) used for?
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Hot items can safely be placed on a balance (scale).
Hot items can safely be placed on a balance (scale).
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What is a rubber stopper used for?
What is a rubber stopper used for?
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It is safe to heat glassware with a rubber stopper in it.
It is safe to heat glassware with a rubber stopper in it.
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What is a pipet (pipette) used for?
What is a pipet (pipette) used for?
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Pipets are often used for transferring large volumes of liquids.
Pipets are often used for transferring large volumes of liquids.
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What is a weigh boat used for?
What is a weigh boat used for?
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Weigh boats can be heated to speed up the weighing process.
Weigh boats can be heated to speed up the weighing process.
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What is a ring stand used for?
What is a ring stand used for?
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A ring stand can be used for heating liquids directly.
A ring stand can be used for heating liquids directly.
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What is a hot plate used for?
What is a hot plate used for?
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It is okay to touch a hot plate even if it has not been on for a while.
It is okay to touch a hot plate even if it has not been on for a while.
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What is a Bunsen burner used for?
What is a Bunsen burner used for?
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The safest way to use a Bunsen burner is to use it on the highest flame setting.
The safest way to use a Bunsen burner is to use it on the highest flame setting.
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What is a stirring rod primarily used for?
What is a stirring rod primarily used for?
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You should never leave a stirring rod on the table.
You should never leave a stirring rod on the table.
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What is a utility clamp used for?
What is a utility clamp used for?
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It is safe to overtighten a utility clamp on glass objects.
It is safe to overtighten a utility clamp on glass objects.
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What is a thermometer used for?
What is a thermometer used for?
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It's safe to let a thermometer roll off the table.
It's safe to let a thermometer roll off the table.
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What is a volumetric flask used for?
What is a volumetric flask used for?
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Volumetric flasks can be used for making solutions of any volume.
Volumetric flasks can be used for making solutions of any volume.
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Study Notes
Test Tube
- Do's: Use for holding small quantities of liquid or solids.
- Don'ts: Use for measuring volume.
- Tips: Available in various sizes. Not ideal for mixing or stirring.
Test Tube Rack
- Do's: Holds test tubes.
- Don'ts: Use for holding hot test tubes. Allow test tubes to cool first.
- Tips: Some racks have poles to allow for upside-down drying.
Test Tube Holder
- Do's: Use for holding and transferring test tubes, usually during heating.
- Don'ts: Squeeze the holder while holding a test tube.
- Tips: Can get hot during heating; hold near the end.
Test Tube Brush
- Do's: Use for cleaning test tubes.
- Don'ts: Push too hard.
- Tips: Choose a brush with a snug fit to the test tube to avoid scratching the glassware.
Beaker
- Do's: Use for observing, heating, and mixing chemicals.
- Don'ts: Use for measuring precise volumes. It is not accurate.
- Tips: Comes in various plastic and glass sizes (borosilicate).
Erlenmeyer Flask
- Do's: Use for observing, heating, and mixing chemicals.
- Don'ts: Use for measuring accurate volumes.
- Tips: Comes in various sizes made of plastic and glass (borosilicate).
Watch Glass
- Do's: Use for observing and holding small amounts of liquids or solids.
- Don'ts: N/A
- Tips: Can be used on top of a beaker to contain odors; available in various sizes.
Graduated Cylinder
- Do's: Use for measuring volumes.
- Don'ts: Use for heating.
- Tips: Comes in various sizes with differing volumes; choose the smallest that fits the needed volume.
Scoopula
- Do's: Use for transferring small amounts of solids.
- Don'ts: Heat the scoopula.
- Tips: Commonly used at the balance.
Spatula
- Do's: Use for transferring small amounts of solids.
- Don'ts: Use for heating.
- Tips: Commonly used at the balance.
Beaker Tongs
- Do's: Use for transferring hot beakers.
- Don'ts: N/A
- Tips: Ensure a firm grip before lifting beakers.
Balance (Scale)
- Do's: Use for measuring the mass of objects.
- Don'ts: Place hot items on the balance.
- Tips: Ensure the balance reads zero before placing objects on it; raise the cover first.
Rubber Stopper
- Do's: Use for sealing containers.
- Don'ts: Heat glassware with a stopper in it.
- Tips: Available in various sizes, some with holes for tubing.
Pipet (Pipette)
- Do's: Transfer and measure small amounts of liquids.
- Don'ts: Contaminate solutions; rinse between uses.
- Tips: Available in various sizes with graduations; some have non-removable plastic components.
Weigh Boat
- Do's: Use for holding small amounts of solids for weighing.
- Don'ts: Heat the weigh boat.
- Tips: Available in various sizes and shapes.
Ring Stand
- Do's: Support and hold various lab equipment.
- Don'ts: N/A
- Tips: Frequently used with clamps, burette clamps, ring supports, wire gauze and triangles.
Hot Plate
- Do's: Use for heating items.
- Don'ts: Touch the hot plate while it's in use.
- Tips: Assume the hot plate is hot, even if it has been off for awhile. Items on the hot plate will still be hot.
Bunsen Burner
- Do's: Use for heating and burning items.
- Don'ts: N/A
- Tips: Handle burner carefully. Be wary of items falling into the flame, as the hottest part is the top of the blue section.
Stirring Rod
- Do's: Use for stirring/mixing solutions.
- Don'ts: Let the stirring rod roll off of the table.
- Tips: Some rods have rubber, to prevent them rolling off.
Utility Clamp
- Do's: Used to hold items.
- Don'ts: Overtighten the clamp on glass objects.
- Tips: Attaches to the ring stand, comes in various styles.
Thermometer
- Do's: Use for measuring temperature.
- Don’ts: Allow the thermometer to fall off the table.
- Tips: Record Celsius, not Fahrenheit. Store upright to prevent liquid bubbles.
Volumetric Flask
- Do's: Accurately measure the volume of liquids for solution preparation.
- Don'ts: N/A
- Tips: Used for a specific volume only; comes in various sizes.
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Description
Test your knowledge about the proper usage of various lab equipment including test tubes, racks, holders, brushes, and beakers. This quiz covers essential do's and don'ts as well as helpful tips for effective and safe laboratory practices.
