3. SpongeBob, Patrick, and Gary were thrilled when Mr. Krabbs told them they were going to the lab today. Mr. Krabbs warned them to be careful and reminded them to follow the safety rules they had learned in science class. The teacher passed out the materials and provided each person with an experiment book. created by T. Trimpe 2003 http://sciencespot.net/

4. SpongeBob and Gary flipped through the book and decided to test the properties of a mystery substance. Since the teacher did not tell them to wear the safety goggles, they left them on the table. SpongeBob lit the Bunsen burner and then reached across the flame to get a test tube from Gary. In the process, he knocked over a bottle of the mystery substance and a little bit splashed on Gary. created by T. Trimpe 2003 http://sciencespot.net/

5. SpongeBob poured some of the substance into a test tube and began to heat it. When it started to bubble he looked into the test tube to see what was happening and pointed it towards Gary so he could see. Gary thought it smelled weird so he took a deep whiff of it. He didn’t think it smelled poisonous and tasted a little bit of the substance. They were worried about running out of time, so they left the test tube and materials on the table and moved to a different station to try another experiment. created by T. Trimpe 2003 http://sciencespot.net/

6. Patrick didn’t want to waste any time reading the directions, so he put on some safety goggles and picked a couple different substances. He tested them with vinegar (a weak acid) to see what would happen even though he didn’t have permission to experiment on his own. He noticed that one of the substances did not do anything, but the other one fizzed. He also mixed two substances together to see what would happen, but didn’t notice anything. He saw SpongeBob and Gary heating something in a test tube and decided to do that test. He ran over to that station and knocked over a couple bottles that SpongeBob had left open. created by T. Trimpe 2003 http://sciencespot.net/

7. After cleaning up the spills, he read the directions and found the materials he needed. The only test tube he could find had a small crack in it, but he decided to use it anyway. He lit the Bunsen burner and used tongs to hold the test tube over the flame. He forgot to move his notebook away from the flame and almost caught it on fire. created by T. Trimpe 2003 http://sciencespot.net/

8. Before they could do another experiment, the bell rang and they rushed to put everything away. Since they didn’t have much time, Patrick didn’t clean out his test tube before putting it in the cabinet. SpongeBob noticed that he had a small cut on his finger, but decided he didn’t have time to tell the teacher about it. Since they were late, they skipped washing their hands and hurried to the next class. created by T. Trimpe 2003 http://sciencespot.net/

9. Things to remember:  After completing an experiment, all chemical wastes should be disposed of according to your instructor’s directions.  All chemicals in the lab should be considered dangerous.  All unauthorized experiments are prohibited.  Approved eye protection devices (such as goggles) are worn in the laboratory any time chemicals, heat or glassware are used.

10. Things to remember  Chipped or cracked glassware should be immediately reported to the teacher and thrown away.  Horseplay or practical jokes in the laboratory are always against the rules.

11. Things to remember:  If a lab experiment is not completed, you should discuss the issue with your instructor.  If a laboratory fire erupts, immediately notify your instructor.  If a piece of equipment is not working properly, stop, turn it off, and tell the science instructor.  If an acid or any chemical is splashed on your skin, wash at once with plenty of water.  If you do not understand a direction or part of a lab procedure, you should ask the teacher.

12. Things to remember:  If you wear contact lenses in the school laboratory, advise your science instructor.  In a laboratory, the following should not be worn loose clothing, dangling jewelry, or sandals.

13. Things to Remember  Laboratory work should only be started on the teacher signal.  Long hair in the laboratory must be tied back or kept entirely out of the way with a hair band, hairpins, or other confining device.

14. Things to remember:  Never remove chemicals or other equipment from the laboratory.  Personal eyeglasses do not provide as much protection as safety glasses.

15. Things to Remember  Read all procedures thoroughly before entering the laboratory.  The following footwear is best in the laboratory closed-toed shoes.  Wash your hands thoroughly with soap and water.

16. Things to remember  When gathering glassware and equipment for an experiment, you should read all directions carefully to know what equipment is necessary, examine all glassware to check for chips or cracks, and clean any glassware that appears dirty.

17. Things to Remember  When you finish working with chemicals, biological specimens, and other lab substances, always dispose of them as instructed.  Work areas should be kept clean and tidy.

18. Things to Remember  Do not return unused chemicals to their original containers.  When trying to add tubing into a rubber stopper it is best done by lubricating the tubing with water or glycerin, using a towel or cotton gloves for protection, and twisting the tubing and stopper carefully

19. Lab Equipment

20. Your lab equipment should: 1.Be CLEAN before using it. 2.Be CHECKED (if glassware for cracks or broken edges– discard anything damaged. 3.Be washed, dried, and carefully stored in the proper place AFTER using it.

21. Beaker Beakers hold and/or heat solids or liquids.

22. Graduated Cylinder A graduated cylinder is used to measure volumes of liquids; probably your best everyday measuring tool, * *NOT to be used for heating or mixing chemicals The number on the top of the graduated cylinder will tell you how much volume it holds

23. Test Tube Test tubes are used to mix chemicals, and also used to heat chemicals in.

24. Test Tube Holder A test tube holder is useful for holding a test tube which is too hot to handle with your hands. Holding it here will keep your hand as far as possible from the fire, and prevent you from squeezing the holder and dropping the tube.

25. Test Tube Brush Test tube brushes are used to clean test tubes and graduated cylinders.

26. Test Tube Rack Test tube racks are for holding, drying, and organizing test tubes in a vertical position, and are located in the side wall cabinets.

27. Electronic Balance The electronic balances makes the mass value very easy to read. “On” button“Off” button“Tare” button Place item here to mass 42.57

28. Triple Beam Balance Used to measure mass in grams. The mass of the object will be the sum of the three beams. Read the triple beam balance to the right. Note the three beams…

29. Spring Scales Spring Scales are used for measuring forces. They measure in Newtons.

30. Ruler We always use the Metric System (also called the International System) to make our measurements. Record your numbers as decimals, not as fractions. Examples: 3.5 mm or 6.2 cm

31. Goggles and Goggle Sterilizer Cabinet

32. Eyewash Station Push this handle to turn on the water – it will stay on until you pull it to turn off.

33. Safety Shower This is the handle to pull down to activate the safety shower – it will stay pulled down until it is pushed back up to turn it off

34. Fire Extinguisher

35. Thermometer Used to measure heat.

36. The Chemical Storeroom Students are not allowed in the storeroom where chemicals and glassware are kept. Materials you need will be available to you in the lab area.

37. Glassware Flip Book Title Page Page 1- Beaker Page 2- Graduate Cylinder Page 3- Test Tube Page 4- Florence Flask Page 5- thermometer Page 6- spring scale Page 7- triple beam balance