if you do not understand the instructions you should?
What is ask the instructor before proceeding
100
Check the label on chemical bottles ___ before removing any of the contents.
What is twice?
100
Carry glass tubing, especially long pieces in a _____ position to minimize likelihood of injury and damage
What is Vertical
100
Heated metals and glass remain very hot for a LONG time the should be set aside and picked up with caution. Use ____ or _____-_____ _____ if necessary.
What is tongs or heat-protective gloves
200
No student may work ____ in the laboratory
What is Alone
200
Never use ___ suction to fill a pipet.
What is mouth?
200
Fill wash bottle only with ______ water and only use as intended
What is Distilled
200
Heated metals and glass remain very hot for a long time. they should be set aside to ___ and picked up with caution
What is cool
300
Do not eat food, drink beverages, or chew gum in the laboratory. Do not use laboratory ___ as containers for food or beverages.
What is glassware?
300
Acids must be handled with extreme care. You will be shown the proper method for ___ strong acids.
What is diluting?
300
Report ___ electrical equipment immediately.
What is damaged?
300
Do not point the open end of a test tube being ___ at yourself or anyone else.
What is Heated
400
Observe good ___ practices. Work areas should be kept clean and tidy at all times. Bring only your laboratory instructions, worksheets, and/or reports to the work area. Other materials should be be stored in your lockers.
What is housekeeping?
400
Take great care when __ acids and other chemicals from one part of the laboratory to another.
What is transporting?
400
If you don't understand how to use some ___, ask the instructor for help.
What is equipment?
400
Never ___ into a container that is being heated.
What is look
500
Dispose of all chemical waste properly. ___ mix chemicals in sink drains. Sinks are to be used only for water and those solutions designated by the instructor.
What is never?
500
Handle flammable hazardous liquids over a pan to ___ spills.
What is contain?
500
Always ___ glassware before attempting to insert it in a stopper.
What is lubricate?
500
do not place ___ directly on desk, a;ways use an insulation pad