Slide 1

Laboratory EquipmentLaboratory Equipment

Slide 2

BeakerBeaker

Beakers hold solids or liquids that Beakers hold solids or liquids that will not release gases when reacted will not release gases when reacted or are unlikely to splatter if stirred or or are unlikely to splatter if stirred or heated.heated.

Slide 3

Beaker TongsBeaker Tongs

Beaker tongs are used to move Beaker tongs are used to move beakers containing hot liquidsbeakers containing hot liquids

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Graduated cylinderGraduated cylinder

A graduated cylinder is used A graduated cylinder is used to accurately measure to accurately measure volumes of liquids.volumes of liquids.

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Erlenmeyer FlaskErlenmeyer Flask

Erlenmeyer flasks hold solids or liquids Erlenmeyer flasks hold solids or liquids that may release gases during a reaction that may release gases during a reaction or that are likely to splatter if stirred or or that are likely to splatter if stirred or heated.heated.

Slide 6

Ring StandRing Stand

Ringstands holds iron rings that Ringstands holds iron rings that allow a safe and convenient way to allow a safe and convenient way to perform reactions that require perform reactions that require heating using a Bunsen burner. heating using a Bunsen burner.

Slide 7

Wire GauzeWire Gauze

Wire gauze sits on the iron ring to Wire gauze sits on the iron ring to provide a place to stand a beaker. provide a place to stand a beaker.

Slide 8

Clay TriangleClay Triangle

The clay triangle is used as a The clay triangle is used as a support for porcelein crucibles support for porcelein crucibles when being heated over a Bunsen when being heated over a Bunsen burner.burner.

Slide 9

Crucible and coverCrucible and cover

Crucibles are used for heating certain solids, Crucibles are used for heating certain solids, particularly metals, to very high temperatures.particularly metals, to very high temperatures.

Slide 10

Crucible tongsCrucible tongs

For handling hot crucibles; also used to pick up For handling hot crucibles; also used to pick up other hot objects. other hot objects. NOTNOT to be used for picking to be used for picking up beakers! up beakers!

Slide 11

Bunsen burner and hoseBunsen burner and hose

Bunsen burners are used for the heating of Bunsen burners are used for the heating of nonvolatile liquids and solids. The hose is the nonvolatile liquids and solids. The hose is the carrier of gas to the Bunsen burner. carrier of gas to the Bunsen burner.

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StrikerStriker

Strikers are used to light Bunsen burners. Strikers are used to light Bunsen burners. The flints on strikers are expensive. Do not The flints on strikers are expensive. Do not

operate the striker repeatedly just to see the operate the striker repeatedly just to see the sparks!sparks!

Slide 13

Test TubeTest Tube

Used to hold small amounts of liquids.

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Triple beam balanceTriple beam balance

Used to measure masses very precisely. With the pan empty, move the three sliders on the three beams to their leftmost positions, so that the balance reads zero.

Slide 15

ScoopulaScoopula

Used to scoop small amounts of solid (fine powders, crystals) out of their containers.

Slide 16

Stirring rodStirring rod

A glass rod is used to manually stir A glass rod is used to manually stir solutions. It can also be used to solutions. It can also be used to transfer a single drop of a solution.transfer a single drop of a solution.

Slide 17

Things to know for sure!Things to know for sure! Know the difference between a beaker and

an Erlenmeyer flask. (Which piece of glassware can we heat to a higher temperature and why?)

Know the difference between beaker tongs and crucible tongs. (Beaker tongs- used for hot beakers, have black heat-resistant ends. Crucible tongs- used for hot crucibles, are completely made of metal and have a “nose” at the end made for grasping small equipment)