1. © 2006 Plano ISD, Plano, TX

2. No Horseplay or Fooling around in the laboratory!

3. © 2006 Plano ISD, Plano, TX 1. BE RESPONSIBLE! 2. FOLLOW ALL WRITTEN AND VERBAL INSTRUCTIONS!

4. © 2006 Plano ISD, Plano, TX 3. Never work alone. 4. Do not touch anything until told to do so. 5. No food, drink, or gum in the lab. Never eat or drink from laboratory glassware 6. Do only what you are told to do. 7. Read all procedures before beginning any experiment. 9-10. Keep work areas clean and aisles clear.

5. © 2006 Plano ISD, Plano, TX BE SAFE!

6. © 2006 Plano ISD, Plano, TX 11 -19. Know safety equipment and procedures. 13. Be alert. 16. Wash hands and clean area. 17. Up / down rule 23-26. Wear goggles and/or aprons whenever instructed. 25. Dress properly for lab. 27. Report all accidents and injuries. 29. Take care of you first!

7. © 2006 Plano ISD, Plano, TX When working with chemicals, you will need to wear safety goggles. Regular eyeglasses do not give adequate protection. Many chemicals require the use of gloves. Check your MSDS or lab write up for the right equipment.

8. © 2006 Plano ISD, Plano, TX Many chemicals can stain or dissolve fabrics. Aprons should be worn to protect your clothing. Check your lab write-up or MSDS to determine if tongs are needed to handle containers of chemicals.

9. © 2006 Plano ISD, Plano, TX 31.Never touch, taste, or smell any chemical. Don’t taste papers such as pH or litmus or any test solutions such as Benedict’s solution. If the instructions include to note the fumes in an experiment, always gently wave your hand over the opening of a container and direct the fumes toward your nose. This is called wafting. 32.Be sure to use the right chemical. Read the label twice.

10. © 2006 Plano ISD, Plano, TX 33.Do not return excess chemicals back to the reagent bottles or to their original containers. Do not use the same spatula to remove chemicals from two containers. Each container should have a different spatula. Replace all stoppers and caps on the bottle as soon as you are finished using it. 38.Keep all chemicals in the lab.

11. © 2006 Plano ISD, Plano, TX 16.Keep hands away from face, eyes, and body while using solutions 15.Label and date all containers that you use to hold chemicals.  Use a pencil to mark the white patch found on many pieces of glassware. Erase the marks when you are finished.  If there is no white patch, a black china marker should be used.

12. © 2006 Plano ISD, Plano, TX 36.Acids and bases react easily with other substances. If you get an acid or a base on your clothes or your skin, begin rinsing and notify your teacher immediately. Pour acids and bases over the sink, not the counter top. If you need to combine an acid or a base with water, always add acids and bases to water NOT the other way around.

13. © 2006 Plano ISD, Plano, TX Glassware Working with 41-45.Never use broken or chipped glassware. Dispose of broken glassware in the designated location. 48.Do not put hot glassware in cold water.

14. © 2006 Plano ISD, Plano, TX Electrical Hazard

15. © 2006 Plano ISD, Plano, TX 44, 46. Do not leave electrical cords out where someone might trip over them. Keep cords away from heat and water. Never touch electrical equipment or cords with wet hands. Turn off all equipment when you are finished with the investigation. Grasp the plug when you disconnect your equipment. Do not pull on the cord.

16. © 2006 Plano ISD, Plano, TX Heat or Fire

17. © 2006 Plano ISD, Plano, TX When working with heat or fire, you will need to wear safety goggles. To move hot objects you will need to use the right tongs. Different types of containers use different sets of tongs

18. © 2006 Plano ISD, Plano, TX The laboratory gas burner is designed to heat a small area with a hot flame. This makes the burner useful for heating glassware such as test tubes and beakers.

19. © 2006 Plano ISD, Plano, TX **Never use a heat source without wearing safety goggles. 49.If you have long hair make sure it is pulled away from your face. Maintain a clean work area and keep all material away from flames. Never reach across a flame. Never point a heated container at anyone. Keep all materials away from heat sources unless specifically instructed to heat it.

20. © 2006 Plano ISD, Plano, TX 50.Never leave a flame unattended; when the burner is not needed, turn it off. 51.Never heat a liquid in a closed container. The expanding gases produced may blow the container apart, harming you or others. 52-54.Never pick up a container that has been heated without first holding the back of your hand near it. Always use a mitt, clamp or tongs when handling hot containers. REMEMBER: Hot glassware looks the same as cool glassware.

21. © 2006 Plano ISD, Plano, TX Final Reminders

22. © 2006 Plano ISD, Plano, TX Always follow your teacher’s instructions when:  modifying all lab procedures as needed.  performing activities outside of the lab procedure.  when an injury occurs.  throwing away chemicals and other materials.  cleaning up spilled materials.  cleaning up broken glassware.

23. © 2006 Plano ISD, Plano, TX One more note on eyes… Always rinse for 20 minutes!!!

24. © 2006 Plano ISD, Plano, TX Labor + Oratory = Laboratory (Work-then talk about your work!)