1. Safety Symbols

2. Biohazard--hazard to humans or the environment resulting from biological agents or conditions Biohazard--hazard to humans or the environment resulting from biological agents or conditions

3. Compressed gas—explosive or pressure danger.

4. Corrosive-- a substance, especially a strong acid; capable of destroying or eating away by chemical action [syn: caustic] Corrosive-- a substance, especially a strong acid; capable of destroying or eating away by chemical action [syn: caustic] caustic

5. Electrical hazard—electricity in use or danger of shock.

6. Envirohazard—substances dangerous to the environment

7. Explosive—substance or activity that is potentially explosive

8. Extinguisher—location sign for the fire extinguisher

9. Eyewash—location sign for the eyewash station

10. Flammable—materials need to be kept away from flame

11. Keep away from food— material is a food contaminant

12. No Flame—materials are combustible—keep flames away

13. Poison—material is toxic. Do not ingest, inhale or get on skin.

14. Radioactive—material emits radiation.

15. Reactive—chemicals can react

16. Recycle—materials to be recycled

17. Toxic/Infectious— biomaterials can cause disease

18. Live Animals—handle with care.  Normally indicated with a mouse symbol.

19. Cut Hazard—danger of cutting oneself  Indicated with a picture of a sharp instrument or a cut on the hand.

20. Eye Safety—eye protection should be worn  Indicated by a picture of goggles or someone wearing goggles

21. Wash hands—important to wash hands before leaving lab  Indicated by a picture of handwashing

22. Clean up—dispose of trash and chemicals properly

23. Which symbol indicates that a substance may be corrosive? AB C D

24. A lake has the following symbol posted. What is being indicated? A.Biohazard present in water B.Radioactive Waste present C.Toxic/infectious biomaterials present D.Envirohazard present

25. Which symbol indicates conservation of resources? A B CD

26. The symbol below would be appropriate for a lab that required- A.Hazardous chemicals B.Heating of substances C.Electrical equipment D.All of the above

27. Which symbol below does not indicate that materials may explode or combust. A B DC