Warmup 8/21/15 Imagine you saw this symbol on the door of a lab you were about to walk in to. What do you think this symbol means? Objective Due To learn the different safety and warning signs related to chemicals Syllabus Lab videos writeup

Chemical Safety Symbols As can be seen from our warmup, there are times when you have to know about nearby dangers when working with chemicals or in a lab. We’re going to do an activity today that’s all about the symbols. However, we’re going to make it more fun. On the next slide are a number hazardous terms. Your job for 20 minutes is to come up with a simple icon to represent each of the hazards or cautions. At the end of the activity, you’ll turn in your list and Mr. C. will pick the best symbols for each concept. If yours is picked, you get an extra bathroom pass, so make them good! Afterwards, we’ll take notes on the real symbols. Memorize them. There will be a closed note quiz tomorrow!

Chemical Safety Symbols Protective clothing required Warning: highly reactive Warning: health hazard Warming: fume hazard Warning: electrical hazard Warning: sharp object hazard Warning: Extremely poisonous Warning: Explosive hazard Warning: disposal hazard Warning: corrosive Warning: Flammable Warning: thermal hazard Warning: environmental hazard Warning: Biohazard

Notes: Chemical Safety Symbols Protective clothing required Warning: highly reactive Warning: health hazard Warming: fume hazard Warning: electrical hazard Warning: sharp object hazard Warning: Extremely poisonous Warning: Explosive hazard Warning: disposal hazard Warning: corrosive Warning: Flammable Warning: thermal hazard Warning: environmental hazard Warning: Biohazard

Notes: Chemical Safety Symbols Many chemical bottles will have “the diamond”. Know the 4 areas on the diamond and what the numbers mean.

Exit Question What does the following sign warn of? a) Extreme poison b) Health hazard c) Biohazard d) Environmental hazard e) Radiation hazard f) None of the above