LABORATORY and SAFETY EQUIPMENT AND THEIR FUNCTIONS Drill

LABORATORY and SAFETY EQUIPMENT AND THEIR FUNCTIONS

Drill # 17 n. List 9/17/14 10 lab equipment items n. Describe their use (guess)

Topic: Lab equipment function n Objective: SWBAT n. Explain the function and proper use of 15 lab equipment items

Short video

Notes n Take notes from the following slides

Goggles Most important piece of lab equipment n Protects eyes from broken glass, chemicals, and flames. n

Lab Aprons n Protects clothes from chemicals

Eye Wash n Rinse eyes for 1520 min. if exposed to chemicals

Fire Blanket n Wrap around a person whose clothes or hair have caught on fire (then they should drop and roll)

Shower n If a chemical is spilled over a large part of the body (all over clothes or legs)

Beaker May be heated n Used to hold or mix chemicals n

Stirring Rod n Glass rod used for stirring n BE CAREFUL! They break easily

Erlenmeyer Flask May be heated n Used for mixing chemicals n

Graduated Cylinder n Measures volumes of liquids

Volumetric Flasks n round flask with a long neck and a flat bottom. These are used to measure an exact volume of liquid. There is a small line on the neck that indicates where these are to filled to (Use the bottom of the meniscus)

Florence Flask n has a round bottom and a long neck. It is used to hold liquids and can be easily swirled and heated

Test Tube n May be heated n Holding small amounts of chemicals n For small reactions

Wire Gauze Spreads out the heat produced by a Bunsen burner n Can place a beaker on top n

Test Tube Holder n DUHHHHH It holds a test tube

Test Tube Rack Holds test tubes in a vertical position. n Allows for clear sight. n Drying rack n

Ring Stand n Multi-purpose, mostly used as a support to heat chemicals and hold burets.

Funnel n n Holds filter paper for filtering solutions. Transferring liquids to smaller narrow necked containers.

Ring Clamp n One side clamps to ring stand. Place wire gauze on ring and it will hold beakers and flasks for heating. Can hold small beakers or funnels.

Watch Glass Used as a beaker cover n Can be used to place small amounts of chemicals on (looks like a contact lens) n

Evaporating Dish n Holds small volumes of liquids being evaporated.

Plastic Wash Bottle n Dispenses water for rinsing equipment

Crucible and Lid n Holds small amounts of chemicals for heating at high temperatures.

Clay Triangle n Supports a crucible in a ring stand apparatus.

Crucible Tongs n Pick up and hold small hot items like a crucible.

Forceps n Used to pick up small items.

Bunsen Burner (& Striker) n n n Controls release of natural gas for burning. Tubing connects to gas source. Striker with flint is used to ignite the burner (or matches).

Electronic Balance n Measures mass in grams

Rubber Stopper n Covers test tube for mixing

Scoopula n Used to transfer solids from one container to another

Test Tube Brush n Cleans out a test tube

Thermometer n Takes temperature (in Celsius)

Pipette n Used for measuring very small volumes of liquids

Guided Practice n n Make a poster showing how lab items are used Include illustrations, labels and captions This may be completed individually or in groups Use small voices and stay on task

Individual Practice 10 min QUIET WORK Create 5 multiple choice questions for Lab Equipment quiz n Include 4 choices n Only one correct answer + 3 distractors n Provide an answer key n

Did we achieve the objective? n Explain the function of 15 lab equipment items

HW n Safety review cartoon-pick up handout

ET n What n Clay is the use of triangle n Graduated cylinder n Beaker tongs