1. LAB SAFTEY and Equipment How to be safe and smart in a lab setting

2. Why be Safe? In groups of two, write down three reasons to be safe in the lab.

3. Reasons for Being Safe

4. Proper Dress Always wear safety goggles Do not wear open-toe shoes Shoes must completely cover the foot Remove jewelry from hands and wrists

5. Proper Dress Tie back long hair Do not use flammable hair products just prior to lab

6. Food Rules Absolutely no food or drink in the lab! Do not eat or drink anything we make in lab (even if it is edible) Waft things to smell them

7. How to Act Absolutely, positively, NO HORSEPLAY!!

8. Safety Equipment Know where the following items are: Fire Extinguisher Safety Shower First-Aid Kit Eye Wash

9. Accident Procedures Notify the teacher immediately of any accident! Do not clean up spills unless directed to do so! Do not pick up broken glass!

10. Clean Up Turn off all burners, gas valves, and water facets Unplug any electrical device Clean your area as directed by the teacher Only dispose of wastes as directed by the teacher DO NOT POUR LIQUIDS IN THE SINK UNLESS TOLD TO DO SO!!!!

11. Safety Symbols Safety symbols are used to indicate possible hazards Become familiar with the safety symbols on page xxxi of your text

12. Safety Video

14. Lab Equipment

15. Data Collection Accuracy refers to how close a measurement is to the real value or accepted value Precision refers to how close a series of measurements are to one another. Errors can affect both accuracy and precision. All experiments should undergo error analysis Did I take more than one reading? Did I use the equipment properly? Was I objective, or did I make the results turn out as I expected they might?

16. Reading a Graduated Cylinder Graduated cylinders are used to accurately measure volume of a liquid. Liquids form a meniscus, or curve, when placed in a graduated cylinder. Always read the volume from the bottom of the curve.