Safety in Science

1. Safety in Science Rules, equipment, WHMIS, HHPS, …

2. Safety in Science Science investigation can be a lot of fun, but certain safety hazards exist in any laboratory. Do you know who is responsible for your safety in and out of a science laboratory? YOU!

3. Activity: Lab Safety Equipment (ASG1) So, the first step in helping to ensure you are safe when performing experiments is to make sure you know where all the safety equipment is located in the classroom and it’s purpose. Instructions • Look around the room. Whatsafety equipment do you see? What is it used for?

4. Activity: Lab Safety Equipment (ASG1) So, the first step in helping to ensure you are safe when performing experiments is to make sure you know where all the safety equipment is located in the classroom and it’s purpose. Instructions • Refer to the handout “ASG1 (Safety In Science)”. CompletePart A (follow the instructionsgiven. • Submit Part A when you arecompleted.

5. Safety in Science In fact, everyone who shares the same classroom – your teacher and classmates – share the responsibility as well as the risks. It is vitally important that you, and the people who are working with you, take safety information seriously and follow all safety precautions precisely.

6. Safety in Science Think about the safety measures you already take in your daily life. Your school laboratory, like your kitchen, need not be a dangerous place. In any situation, you can avoid accidents when you understand how to use equipment and materials and follow proper procedures.

7. Safety in Science – DYK? In Canada, (2012 population of 34.7 million) the Association of Workers’ Compensation Boards of Canada indicates, that on average, three people a day (365 days in a year) die in a Canadian workplace and, in addition, nearly one million are injured at work every year in Canada. This does not include the many workers who are not covered by workers’ compensation and who do not appear in WCB databases.

8. Safety in Science – DYK? Statistically, young people and new hires are more at risk of injury on the job. Being unconscious of the hazards or lacking the competency to manage the risks from their associated duties and surrounding work environment increases their potential and severity of incidents and injuries. Amoung injured workers under the age of 25, more than 50% of them were hurt in the first six months on the job. Nearly 20% of the injuries and fatalities happen during the first month on the job.

9. Safety in Science Thus, safety in the laboratory combines common sense with the foresight to consider the worst-case scenario. NOTE! The activities and investigations in the course are safe, as long as you follow proper lab safety precautions.

10. Activity: Lab Safety Rules (Handout) The next step in helping to ensure you are safe when performing experiments is to make sure you know all the SMHS science classroom lab safety rules. INSTRUCTIONS • Refer to the handout “Science Safety” • As a class, read and discuss the rules.

11. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • Identify five unsafe activities and explain why they are unsafe?

12. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • List 3 correct lab procedures depicted in the illustration.

13. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • List 3 items in the illustration that are there for the safety of the students in the lab.

14. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • What should Bob do after the accident?

15. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • What are three things shown in the lab that should not be there?

16. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • Compare Joe and Carl’s lab techniques. Who is doing it the correct way?

17. Activity: Lab Safety Rules QUESTIONS • The diagram shows students performing an experiment in the lab. • What will happen to Ray ad Tim when the teacher catches them?

18. Activity: Lab Safety Rules QUESTIONS • Use your copy of the “Science Safety” sheet to answer the following: • You and your lab partner are using a graduated cylinder to measure out 100 mL of acid. You are holding the cylinder steady while your partner pours. Acid fills the cylinder, but some falls onto your wrist. What do you do?

19. Activity: Lab Safety Rules QUESTIONS • Use your copy of the “Science Safety” sheet to answer the following: • You have just completed an interesting investigation and recorded very detailed observations. You are working with your partner to return all equipment to the correct location and all chemical waste to the appropriate container. Just as you begin to wipe down the lab bench with a wet paper towel, the bell rings and your partner leaves everything, picks up his books, and says, “meet you in the café for lunch!”. What do you do?

20. Activity: Lab Safety Rules QUESTIONS • Use your copy of the “Science Safety” sheet to answer the following: • You are conducting an experiment on chemical changes. You have many solutions in labeled test tubes at your workstation. You accidentally spill the contents of one of the test tubes on the floor. What do you do?

21. Activity: Lab Safety Rules QUESTIONS • Use your copy of the “Science Safety” sheet to answer the following: • You have lit a Bunsen burner and are about to use the flame to heat water. Something suddenly catches your attention and as you quickly turn around, your sleeve passes into the flame and catches fire. What do you do?

22. Activity: Lab Safety Rules QUESTIONS • Use your copy of the “Science Safety” sheet to answer the following: • You and your lab partner are preparing to begin an experiment. Your partner has gone to measure out the correct mass of a solid reactant, while you are washing the required test tubes and beakers. You accidentally drop a beaker onto the floor and it breaks. What do you do?

23. Activity: Lab Safety Rules QUESTIONS • Use your copy of the “Science Safety” sheet to answer the following: • You are measuring out a powdery reactant using an electronic balance. Some powder spills onto the balance rather than the weigh paper. You decide to blow it off and some powder blows into your eye. What do you do?

24. Activity: Lab Safety Rules (ASG1) INSTRUCTIONS (cont’d) • Refer to the handout “ASG1 (Safety In Science)”. Complete Part B. You can either hi-lite your answers or wrtie them on a separate sheet of paper. • Submit Part B when you have completed it.

25. Activity: Lab Equipment (WS3) INSTRUCTIONS • Various equipment will be shown to you and their purpose explained. • Listen carefully and complete the handout “WS3 (Lab Equipment)”. ANSWERS 1. C 6. AA 11. BB 16. X 21. A 2. T7. O 12. EE 17. L22. G 3. P8. B13. N 18. Q23. Z4. GG9. I 14. H 19. K24. W5. Y10. CC15. DD 20. V25. J

26. Safety in Science Matter includes both helpful and harmful solids, liquids, and gases. For example, oxygen is a gas that all animals must take in to survive, but nitrogen dioxide gas from car exhaust is poisonous. How do we know whether or not a given substance is safe to use? How do we work safely with any chemical in the laboratory, at home, or at work?

27. Safety in Science One source of information about hazardous substances is the warning symbols that are placed on containers of potentially dangerous materials. Hazardous Chemicals • Can be: • Poisonous (toxic) • Flammable • Explosive • Corrosive (reactive)

28. Safety in Science There are five ways hazardous chemicals can enter your body: • Inhalation • Ingestion • Injection • Skin contact • Eye contact

29. Safety in Science - HHPS The Hazardous Household Products Symbols (HHPS) on consumer products specify both the nature and the degree of any hazard. Each symbol is made up of a picture and a frame. The picture tells you the type of danger. The frame tells you whether it is the contents (octagon) or the container (triangle) that poses that hazard.

30. Safety in Science - HHPS The Workplace Hazardous Materials Information System (WHMIS) provides workers and student with complete and accurate information about hazardous products. Clear tand standardized labels must be present on the product’s container. If the material is hazardous, the label will include one or more of the following WHMIS symbols.

31. Safety in Science - MSDS In Canada, manufacturers of all hazardous products used in workplaces, including schools, must provide information sheets about their products. The Material Safety Data Sheets (MSDS) identifies the chemical and physical hazards associated with each substance. It also includes physical data, toxicity, health effects, first aid, and spill cleanup procedures.

32. Safety in Science SAFETY SYMBOLS • Indicate why a product is dangerous • Variety of symbols • HHPS  Hazardous Household Product Symbols  container is hazardous  contents are hazardous • WHMIS  Workplace Hazardous Materials Information System • MSDS  Materials Safety Data Sheet

33. Activity: Safety Symbols (ASG1) The last step in helping to ensure you are safe when performing experiments is to make sure you know (i) what the HHPS and WHMIS symbols are and (ii) what kind of information is contained in an MSDS. INSTRUCTIONS • Refer to the handout “ASG1 (Safety in Science)”. Complete Part C (follow the instructions given). • Submit Part C when you are done. NOTE! In order to complete Q. 6 you will need a copy of the MSDS for sulfuric acid. This will be given to you.

34. Safety in Science PRACTICE • Which of the two warning systems do you think is more effective?

35. Safety in Science PRACTICE • Why is it important to standardize safety symbols? So people will know exactly why a product is dangerous. They will not have to guess.

36. Activity: Safety Symbols INSTRUCTIONS • Your teacher will supply you with various containers of products. Examine the containers for hazardous product symbols. • Make a table to summarize your findings, with the following headings:

37. Check Your Learning Before participating in any laboratory activity at SMHS, students must: • Review the lab safety rules with an instructor, • Sign a safety declaration, and • Achieve a score of 70% or greater on the prescribed safety quiz.