Chem Video
What are the last few things you should do when you are finished with an experiment?
-Clean up -Wipe up anything and throw away -Clean glass thoroughly -Clean chemicals off skin
What safety tips should you keep in mind when pouring chemicals?
-Hold away from face. -Work carefully -Always wear safety goggles
What methods are used to put out clothing fire?
-Safety shower -Stop, drop, and roll -Fire blanket
Upper body
-Sleeves fit closely -Shirts made of cotton or wool -Apron
When you read the label on a chemical container, what are the three important pieces of safety info on it?
1. Name of chemical 2. Concentration 3. Hazard warning
Thermometers contain either alcohol or mercury to indicate temperature. How can you tell them apart?
Alcohol= red or blue liquid Mercury= silver liquid
How should you protect your eyes?
Always wear goggles
What should you do before you mix chemicals?
Ask teacher
Where should you keep personal belongings that you bring to the lab?
Away from where people walk
What will the flame of a properly adjusted burner look like?
Blue flame, lighted inner core
Feet
Closed leather shoes
How do you extinguish a small fire in a container?
Cover them and turn off burner
What should you do with the products or waste left over from an experiment?
Dispose in waste container
What should you do if you have a larger fire?
Fire extinguisher operated by a teacher
What is used to control gas flow in a Bunsen Burner? What is used to control air?
Gas=valve on bottom Air=air outlets
How do you treat corrosive chemicals that get on your skin or clothes?
Head for safety shower ASAP. Take off all clothes and wash for 15 min.
What is the safest method to heat flammable material?
Heating mantle
Lower Body
Long pants or skirt
What is the most important rule about behavior in the lab?
No fooling around
IS the laboratory a place to eat, drink, or put on makeup? Explain why or why not.
No. Chemicals can contaminate it and irritate skin
What do you do if you are injured in lab?
Notify teacher and get immediate medical attention
How can you draw small volumes of liquids into a pipette safely?
Pipette filler. Never with mouth
How do you treat non-corrosive chemicals that get on your skin or clothes?
Rince with plenty of water
When you use a match, how should you strike it and how do you light the burner?
Strike away from you. Turn on gas after. Light from side.
If you break a thermometer, what is the safe way to clean up?
Teacher needs to clean it up Alcohol= Wiped up with paper towel Mercury= Clean up with mercury clean-up kit
If you spill a chemical, what should you do?
Tell the teacher
Why is it important to remove contact lenses?
They can trap chemical vapors in eyes
How should you wear your hair and jewelry?
Tie up loose hair. Remove rings and watches
IF the flame sputters and goes out, or if you smell gas, what should you do?
Turn gas off immediately
Where should you work with volatile chemicals?
Under a fume hood
What is the safe way to read a buret that is above eye level?
Use a step stool to reach
How can you safely carry a heated object?
Use beaker tongs and wear gloves designed for hot glassware
How do you treat chemicals that get in your eyes?
Wash in eye-wash fountain. Hold open and roll eyes around for 15 min. Then see a doctor
What is the safest method to heat a test tube? How should a test tube be heated directly?
Water bath. Over the flame. Hold at angle and away from others
How can you protect your hands when working with corrosive chemicals?
Wear the appropriate gloves
