1. Lab Safety Rule/Equipment Review 1. True or False. During the lab the stool at the lab station should be pushed under the bench to keep the aisles clear. ans: True 2. True or False. If you have some of the chemicals left over after a lab, you should return it to the bottle from which it came. ans: False 3. True or False. You should read and understand the lab before the lab. ans: True

2. 4. True or False. Food of any kind and drinks are NOT allowed in the lab at any time. ans: True 5. In the case of a chemical splash, you should flush your skin and/or eyes out for at least __________ minutes with running water. ans: 20 minutes 6. How many times should the labels on a bottle of chemicals be read before use? ans: at least twice

3. 7. True or False. It is good to conduct exploratory labs as long as those labs are close to the one being conducted. ans: False 8. True or False. Safety glasses MUST be wore at ALL times in the lab. ans: True 9. True or False. In the lab, long hair should be tied back and loose or baggy cloths/jewelry should be secured. ans: True

4. 10. When mixing acid and water, always add ______ into ______ as you otter. ans: acid into water 11. How can you tell if glassware is HOT just by looking at it? ans: place the back of your hand close to detect radiant heat. 12. You should ALWAYS use ______ on the scale before massing anything. ans: weighing paper

5. 13. True or False. Closed toed shoes MUST be wore during labs ans: True 14. True or False. Horseplay, joking around or pranks in the lab are permitted. ans: False 15. True or False. You should always wash your hands at the end of all labs. ans: True

6. 16. You come into the lab to find a beaker next to a ring/ring stand and burner. What should you assume? ans: that the beaker is HOT 17. What should be done before disposing of any chemical? ans: check with the instructor 18. What should NEVER be stuck into a beaker or test tube to smell the contents? ans: your nose

7. 19. True or False: Report ALL accidents to the teacher no matter how trivial it may be. ans: true 20. True or False. Damaged glassware can be used as long as the crack in least than 1 cm long. ans: False 21. True or False. Alcohol should be stored next to an open flame. ans: False

8. 22. This piece of equipment is used for approximate measurement but mostly for mixing and heat. ans: beaker 23. This piece of equipment is used to cover an evaporating dish or small beaker? ans: watch glass 24. This piece of equipment is the primary equipment used to heat substances in the lab? ans: Bunsen burner

9. 25. What part of the graduated cylinder should you read for an accurate measurement? ans: meniscus 26. This piece of equipment with its tapered sides is used for approximate measurement but mostly for mixing and heat. ans: Erlenmeyer flask 27. When heating a test tube the test tube is held by a ___________ ans: test tube clamp or holder

10. 28. What does the word ‘science’ mean? ans: to know 29. This piece of equipment is used to support a beaker in a ‘water bath’. ans: a ring and ringstand 31. You light your Bunsen burner and get a weak yellow flame. What is the problem and how would fix the problem? ans: not enough air; open the air vents

11. 31. What would a safety symbol look like to indicate ‘can irritate mucus membranes’? ans: a test tube with fumes 32. If a fire breaks out in the lab, what is the first thing you should do? ans: turn off the gas at the main. 33. True or False: Pyrex and Bomex are two names that indicate that the glassware can NOT be heated? ans: False, they can be heated

12. 34. Why should you wet and reshape the filter paper to fit the funnel for filtration? ans: so that no sample is loss 35. What is the liquid that passes through the filter paper called? ans: decant 36. True or False. While heating a sample in a test tube, you should move the test tube in and out of the flame. ans: True

13. 37. Why should you turn the heat off before the end temperature is reached? ans: to allow the residual heat to bring the wanted temperature 38. Why should you NEVER light the Bunsen burner while on the ring stand. ans: may jump and knock something over 39. What piece of equipment is used to direct flow into smaller openings? ans: glass stirring rod

14. 40. When heating a test tube, what piece of equipment is used to hold the test tube? ans: test tube clamp 41. In what direction should the opening of the test tube be pointing when heated? ans: away from self and all other. 42. True or False. If the lab says to measure out about 150 ml, it is OK to use a beaker? ans: true

15. 43. Hot beaker should be removed from a ring stand using ______________? ans: hot mitts 44. The safety symbol use to represent safety glass must be worn is? ans: picture of goggles 45. Your Bunsen burner has a weak undefined flame. What should you do? ans: add air

16. 46. A picture of a test tube with fumes coming off the top indicates? ans: irritation to the mucus membrane 48. True or False: your break the glassware, you clean it up. ans: False 49. True or False: you should pick up spilled chemicals with your hands. ans: NO, never touch with your hand use forceps

17. 50. True or False: Chemical reactions that release heat should be mixed in a plastic beaker. ans: False