Lab Safety Review

1. Lab Safety Review

2. 1.Before starting any lab experiment, you must: • listen to the teachers instructions; read lab instructions • gather necessary materials • wait till you get the go ahead

3. 2. After a lab you must: • clean & put away all lab equipment • Note: Use right sized brush for test tubes • Report broken, chipped or cracked equipment to the teacher • wash your hands • work on your lab report

4. 3. When heating a test tube you must: • put your safety goggles on • tie back loose hair • ensure that you have no loose clothing • use tongs • use a test tube made of “pyrex” or “kimax” • point it away from others • heat in a circular motion using clamp to hold

5. 4. If you drop and break glassware you must: • identify any chemicals present and notify the teacher • sweep up the glass and place it in the glass disposal container

6. 5. If you spill a chemical, you must: • tell your teacher immediately • clean up as per teacher’s instructions – for acid use baking soda, for base use boric acid

7. 6. If a chemical is splashed in your eye, you must: • Never rub eye; wash your eye in the eye wash station for 15 minutes or cold water (slows down the reaction) • Never put another chemical on it • notify the teacher

8. 7. When smelling a chemical, you must: • hold flask away from your face • waft the fumes with your hand • There is no fooling around or food and drink allowed in the lab. • Lab safety song

9. Fire Extinguisher • On wall at rear of room • How to use: • P – pull the pin • A – aim low • S - squeeze the trigger • S - sweep back and forth to cover all areas • Fire extinguishers come in different forms • Chemical (dry/power, wet) • Water • NEVER USE A FIRE EXTINUISHER ON A PERSON

10. Student on fire • STOP, DROP and ROLL • If fire does not go out, use the fire blanket ( on top of self) • NEVER USE A FIRE EXTINGUISHER ON A PERSON

11. Assignment • Safety in the Lab worksheets

12. Safety Symbols: • Hazardous products are identified by safety symbols • Each symbol has a border and an illustration to describe the hazard • There are symbols for two systems: Household and Workplace

13. Assignment • On the sheet provided identify which symbols are Household Hazardous Products (HHPS) and which symbols are Workplace Hazardous Materials Information System (WHIMS) • describe when each border (octagon, triangle, circle) is used • Refer to your textbook, p. 518

14. WHMIS: Workplace Hazardous Material Information System • This system is universal Circle – Red – Dangerous • Octagon – Red – Extreme Danger • Yield/triangle – Yellow – Caution • Diamond – orange – extreme warning

15. Common Lab Equipment • Fill out the worksheet

16. Beaker & tongs • Used to store, mix • Made by Pyrex & Kimax

17. Erlenmeyer Flask • Used to mix • Use rubber stopper for storage

18. Florence Flask • Used for mixing, or storage • Can be used for heating

19. Graduated Cylinder • Accurate liquid measuring • The smaller the cylinder the more accurate it is • Meniscus – read from the bottom of the meniscus curve

20. Funnels • Used for pouring liquids • Can use paper filters – filtration

21. Triple – Beam – Balance • Measures mass in grams

22. Test tubes & clamp • Heating • Mixing • Must be held with a clamp

23. Tongs • Holding the beaker • Hold small items to heat/burn

24. Stir rod & Scoopula • Scooping and mixing materials • Used for powders

25. Crucible heats to very, very hot

26. Evaporating dish • Allows crystals to form through evaporation

27. Mortar and Pestle • To grind dry chemicals

28. Bunsen Burner • heating