Science Lab Safety Rules - Georgetown High School



Science Lab Safety Rules

1. Always wear _____________________________________. There will be no exceptions to this rule!

2. Conduct yourself in a _________________________ manner at all times in the laboratory.

3. Study your lab assignment before you come to class and have your ___________ completed. Pay particular attention to dangerous reagents or special safety precautions.

4. Never work in the lab without ____________________________.

5. Never perform an ________________________________________________.

6. Never ______________________ by mouth and never ________________________ gases or other vapors.

7. Be careful with ___________________________.

8. Never __________________________________ any part of this classroom.

9. Report any accident, injury, chemical spill or _________________________________ procedure at once.

10. Tie back _____________________________ and secure _______________________________.

11. Do not leave a ______________________________ burner unattended.

12. Read labels of ____________________________________________ carefully before using the chemicals.

13. Never return ______________________________ chemicals to a reagent bottle. No not put a pipet, dropper or spatula in a reagent bottle – pour the reagent into a small beaker instead.

14. Always pour __________________ slowly into water to dilute – never pour water into acid. (Remember: ADD ACID)

15. Place broken glass, solid substances and used chemicals in __________________________________ container. Never throw a chemical down the sink unless given permission by Mrs. Hogdson.

16. Keep your lab area as _________________ as possible at all times.

17. _____________________________________________ with soap and water after each experiment.

18. To test the odor of a solution, do not hold it directly under nose. Hold it away and _______________________________ over the solution towards you. (wafting)

19. Use the __________________________________ when working with volatile substances or poisonous vapors.

Emergency Situations

1. Spray fire extinguisher left to right at the base of the flame. Where is the fire extinguisher?_________________________

2. If clothing catches fire wall calmly to the safety shower. If your lab partner’s clothing catches fire use the fire blanket to smother the fire. How do you use the safety shower?____________________Where is the fire blanket?__________________

3. Corrosive chemicals splashed on skin should be flushed off promptly with copious amounts of flowing water for at least 15 minutes. If splashed on clothing, the clothing must be removed while under the safety shower. Stay under the shower for at least 15 minutes while Mrs. Hodgson calls the nurse or 911.

4. A corrosive chemical in the eye is a very serious matter. Get to an eye wash fountain immediately (within 15 seconds if possible). Wash the eye for at least 15 minutes while someone else calls the nurse. Keep the eyelid open fully; move the eyeballs up, down, left, right, criss-cross, round and round. How do you use the eye wash fountain?_____________________

Description/Use Apparatus

Beaker

Glass container, may be heated

Graduated Cylinder

Glass marked with mL scale, used

to measure volume

Erlenmeyer and

Florence Flask

Glass, may be heated

Erlenmeyer Flask Florence Flask

Test Tube

Glass, many uses, can be heated

Test Tube Holder[pic]

Metal clamp with a spring handle to

hold a test tube

Tongs

Metal, many types, used to pick

up and hold objects

Double Buret Clamp

Metal clamp with flexible clips,

used to hold burets

Description/Use Apparatus

Pipestem Triangle

Triangular wire frame with clay material coverings, used to support the crucible

Crucible and Cover

Small porcelain dish with cover,

used to heat small amounts of solid

material at high temperature

Wire Gauze

Wire screen used to spread the heat

of a flame

Burner

Metal heating device connected to gas

outlet with rubber tubing used to heat chemicals in beakers or test tubes

Ring Stand

Metal rod upright with heavy base

used as a support

Buret

Glass marked with mL and fitted with a stopcock, pinch clamp, or glass bead used to withdraw and measure volumes of solutions in titrations

Volumetric Flask

Glass marked off with liter capacity with a glass stopper used in the preparation of solutions

Description/Use Apparatus

Reaction Plate

Plastic with 12-36 wells, used to hold liquids in micro equipment

Iron Ring

Iron ring with screw fastener, several sizes, used to fasten to the ring stand as a support for apparatus

Test Tube or Buret Clamp

Metal clamp with screw fastener, swivel and lock nut, adjusting screw, and curved clamp, used to hold apparatus, may be fastened to the ring stand

Mortar and Pestle[pic]

Heavy porcelain dish with grinder, used

to grind chemicals into a powder

Scoopula

May be of metal or porcelain, used

to transfer solid chemicals in weighing

Triangular File

Metal file with three cutting edges,

used to scratch glass to file

Test Tube Rack

Wood, metal, or plastic rack used to hold test tubes in an upright position

Wash Bottles

Various sizes, squeezable plastic bottle with angular tip used to dispense distilled water

Description/Use Apparatus

Test Tube Brush

Brush with wire handle use to scrub apparatus

Stirring Rod

Glass rod used to stir combinations

of materials or used in pouring

liquids

Evaporating Dish

Porcelain dish used as a container

for small amounts of liquid being evaporated

Watch Glass

Curved glass used as a beaker

cover or used in evaporating very

small amounts of liquid

Funnel[pic]

Glass or plastic used to hold filter paper

or used to aid in pouring

Forceps

Metal used to pick up or hold small objects

Thin Stem Disposable Pipette

Plastic used in micro experiments

to transfer small amounts of liquid

Flint Striker

Metal with flint used to spark or light flame

Name____________________Per._____Date___________

View the picture, and answer the questions concerning lab safety.

Questions:

1. List 3 unsafe activities shown in the illustration and explain why each is unsafe.

2. List 3 correct procedures depicted in the illustration.

3. What should Bob do after the accident?

4. What should Sue have done to avoid an accident?

5. Compare Luke and Duke's lab techniques. Who is following the rules?

6. What are three things shown in the lab that should not be there?

7. Compare Joe and Carl's lab techniques. Who is doing it the correct way?

8. What will happen to Ray and Tim when the teacher catches them?

9. List three items in the illustration that are there for the safety of the students in the lab.

10. What is Betty doing wrong?

Name: __________________

Lab Safety Cartoon

Instructions:

• Single frame

• 4 colors (minimum)

• 1-2 line caption or “speaking bubbles”

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