Mr. Watson

Mr. Watson

HST

Lab EquipmentLab Equipment

Mr. Watson

Mr. Watson

HST

BeakerBeaker

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

Mr. Watson

Mr. Watson

HST

Erlenmeyer FlaskErlenmeyer Flask

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

Mr. Watson

Mr. Watson

HST

Florence FlaskFlorence Flask

Rarely used in first Rarely used in first year chemistry, it is year chemistry, it is used for the mixing used for the mixing of chemicals. Narrow of chemicals. Narrow neck prevents splash neck prevents splash exposure.exposure.

Mr. Watson

Mr. Watson

HST

Graduated CylinderGraduated Cylinder

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

Mr. Watson

Mr. Watson

HST

Gas Collecting Gas Collecting BottleBottle

We use gas collecting We use gas collecting bottles when large volumes bottles when large volumes of gases are produced, and of gases are produced, and must be collected by the must be collected by the displacement of water.displacement of water.

Mr. Watson

Mr. Watson

HST

Test Test TubesTubes

13 x 100 mm test 13 x 100 mm test tubestubes

10 x 75 mm test 10 x 75 mm test tubestubes

IgnitionIgnitiontubetube

Mr. Watson

Mr. Watson

HST

Test Tube HolderTest Tube Holder

A test tube holder A test tube holder is useful for is useful for holding a test holding a test tube which is too tube which is too hot to handle.hot to handle.

Mr. Watson

Mr. Watson

HST

Test Tube BrushesTest Tube BrushesTest tube brushes Test tube brushes are used to clean are used to clean test tubes and test tubes and graduated cylinders.graduated cylinders.Forcing a large brush Forcing a large brush into a small test tube into a small test tube will often break the will often break the tube.tube.

Mr. Watson

Mr. Watson

HST

Test Tube RacksTest Tube Racks

Test tube racks are for holding and Test tube racks are for holding and organizing test tubes on the laboratory organizing test tubes on the laboratory counter. Plastic racks may melt in contact counter. Plastic racks may melt in contact with very hot test tubes.with very hot test tubes.

Mr. Watson

Mr. Watson

HST

Rubber StoppersRubber Stoppers

Rubber stoppers are Rubber stoppers are used to close used to close containers to avoid containers to avoid spillage or spillage or contamination.contamination.Containers should Containers should never be heated when never be heated when there is a stopper in there is a stopper in place.place.

Mr. Watson

Mr. Watson

HST

Spot PlatesSpot Plates

Spot plates are used Spot plates are used when we want to when we want to perform many small perform many small scale reactions at one scale reactions at one time. We will use these time. We will use these many times during the many times during the year. year.

Mr. Watson

Mr. Watson

HST

Watch GlassWatch Glass

A watch glass is A watch glass is used to hold a small used to hold a small amount of solid, amount of solid, such as the product such as the product of a reaction.of a reaction.

Mr. Watson

Mr. Watson

HST

Glass Stir RodGlass Stir Rod

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

Mr. Watson

Mr. Watson

HST

Medicine DropperMedicine Dropper

A medicine dropper A medicine dropper is used to transfer is used to transfer a small volume of a small volume of liquid (less than liquid (less than one mL).one mL).

On top of each medicine dropper is a On top of each medicine dropper is a ““rubber bulbrubber bulb””

Mr. Watson

Mr. Watson

HST

Litmus Litmus PaperPaper

RedRed litmus paper litmus paper is used to is used to identify bases.identify bases.

BlueBlue litmus paper litmus paper is used to is used to identify acids.identify acids.

Mr. Watson

Mr. Watson

HST

ForcepsForceps

Forceps (or tweezers) are used to pick up Forceps (or tweezers) are used to pick up small objects.small objects.

Mr. Watson

Mr. Watson

HST

FunnelFunnel

A funnel is A funnel is used to aid in used to aid in the transfer of the transfer of liquid from one liquid from one vessel to vessel to another.another.

Mr. Watson

Mr. Watson

HST

Mohr PipetMohr Pipet

A Mohr pipet A Mohr pipet measures and measures and delivers exact delivers exact volumes of volumes of liquids.liquids.

Mr. Watson

Mr. Watson

HST

Wash BottleWash Bottle

A wash bottle has a A wash bottle has a spout that delivers a spout that delivers a wash solution to a wash solution to a specific area. specific area. Distilled water is the Distilled water is the only liquid that only liquid that should be used in a should be used in a wash bottle.wash bottle.

Mr. Watson

Mr. Watson

HST

Weighing BoatWeighing Boat

Weighing boats are used Weighing boats are used to weigh solids that will to weigh solids that will be transferred to be transferred to another vessel.another vessel.

Mr. Watson

Mr. Watson

HST

SpatulasSpatulas

Spatulas are used to Spatulas are used to dispense solid dispense solid chemicals from their chemicals from their containers.containers. Chemicals should Chemicals should never be transferred never be transferred with your bare with your bare hands.hands.

Mr. Watson

Mr. Watson

HST

Beaker TongsBeaker Tongs

Beaker tongs are Beaker tongs are used to move used to move beakers beakers containing hot containing hot liquidsliquids

Mr. Watson

Mr. Watson

HST

Bunsen BurnerBunsen Burner

Bunsen burners are Bunsen burners are used for the heating used for the heating of nonvolatile liquids of nonvolatile liquids and solids.and solids.

Mr. Watson

Mr. Watson

HST

Evaporating DishEvaporating Dish

The evaporating dish The evaporating dish is used for the heating is used for the heating of stable solid of stable solid compounds and compounds and elements.elements.

Mr. Watson

Mr. Watson

HST

CrucibleCrucible

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

Mr. Watson

Mr. Watson

HST

Clay TriangleClay Triangle

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

Mr. Watson

Mr. Watson

HST

Crucible TongsCrucible Tongs

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

Mr. Watson

Mr. Watson

HST

Glass PlatesGlass Plates

Glass plates Glass plates provide a surface provide a surface for semi-micro scale for semi-micro scale experiments, such experiments, such as drop reactions as drop reactions and testing of acids and testing of acids and bases.and bases.

Mr. Watson

Mr. Watson

HST

Triangular FileTriangular File

Triangular files Triangular files are used primarily are used primarily to cut glass rod, a to cut glass rod, a skill that your skill that your instructor will instructor will share with you share with you when it becomes when it becomes useful.useful.

Mr. Watson

Mr. Watson

HST

Ringstands and their Ringstands and their ComponentsComponents

Ring stands are a safe and Ring stands are a safe and convenient way to convenient way to perform reactions that perform reactions that require heating using a require heating using a Bunsen burner.Bunsen burner.

Mr. Watson

Mr. Watson

HST

Ringstands and their Ringstands and their ComponentsComponents

Iron RingsIron RingsIron rings connect to Iron rings connect to a ring stand and a ring stand and provide a stable, provide a stable, elevated platform for elevated platform for the reaction.the reaction.

Mr. Watson

Mr. Watson

HST

Ringstands and their Ringstands and their ComponentsComponentsUtility ClampsUtility Clamps

Utility clamps are used Utility clamps are used to secure test tubes, to secure test tubes, distillation columns, distillation columns, and burets to the ring and burets to the ring stand.stand.

Mr. Watson

Mr. Watson

HST

Ringstands and their Ringstands and their ComponentsComponents

Double Buret ClampsDouble Buret ClampsDouble Buret Double Buret clamps are used clamps are used to burets – long to burets – long graduated tubes graduated tubes used in titration.used in titration.

Mr. Watson

Mr. Watson

HST

Ringstands and their Ringstands and their ComponentsComponentsWire GauzeWire Gauze

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

On older wire gauze, On older wire gauze, the white material is the white material is asbestos!asbestos!

Mr. Watson

Mr. Watson

HST

Pressed Fiber PadPressed Fiber Pad

A 4” x 4” square A 4” x 4” square of ceramic fiber, of ceramic fiber, it provides a it provides a surface for hot surface for hot beakers so that beakers so that the beaker does the beaker does not come in not come in contact with a contact with a cold countertop cold countertop and shatter.and shatter.

Mr. Watson

Mr. Watson

HST

StrikersStrikersStrikers are used to Strikers are used to light Bunsen burners. light Bunsen burners.

The flints on strikers The flints on strikers are expensive. Do not are expensive. Do not operate the striker operate the striker repeatedly just to see repeatedly just to see the sparks!the sparks!