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CHM 1025C Lab Safety and Equipment Exam 2024/2025 Questions With Completed & Verified.
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CHM 1025C Lab Safety and Equipment Exam 2024/2025 Questions With Completed & Verified.
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CHM 1025C Lab Safety and EquipmentPour chemicals from large reagent bottles into __ before measuring. - ANS Small bottles
Read and __ a chemical label before using the chemical. - ANS Reread
When diluting an acid, always add __ to __. - ANS Acid to water
Work with volatile chemicals under a __. - ANS Fume hood
Use a __ or __ to draw liquid into a pipette. - ANS Pipette bulb or pipette filler
Strike matches __ your body. - ANS Away from
Move test tubes back and forth at an __ while heating. - ANS Angle
Hold hot glassware with a __ or __. - ANS Tongs or Test tube holder
When inserting lubricated glass tubing into a stopper, protect your hands with __. - ANS Gloves
Always protect your eyes with __ when working in the laboratory. - ANS Safety goggles
Stand on a __ if you need to reach. - ANS Step stool
Rinse chemicals from your eyes in an __. - ANS Eye wash station
__ clothing on the way to the way to the safety shower. - ANS Remove
Extinguish small fires in containers by __. - ANS Covering them or by using a fire extinguisher
Put out clothing fires in a __. - ANS Safety shower
Hold bottles with your hand over the label when pouring. - ANS False
Immediately wipe up any spills. - ANS True
When lighting a Bunsen burner, first turn on the gas then strike the match. - ANS False
Check glassware for stars and cracks before using them. - ANS True
Shake laboratory thermometers down before use. - ANS False
, Carefully scoop up mercury from a broken thermometer with a piece of paper. - ANS False
If you don't have an inserter, lubricate glass tubing before inserting through a stopper. - ANS
True
Wear closed leather shoes to protect your feet. - ANS True
Remove rings and watches before working in the laboratory. - ANS True
Four main rules one must observe to avoid lab accidents - ANS -Stop to think
-Common sense
-"What will be the consequences of what I do next?"
-If in doubt, ask the teacher
Incorrect method of wearing safety goggles - ANS Around one's neck or on top of one's head
In terms of attire, what must be avoided? - ANS Floppy garments, things that dangle such as
long hair, and sandals. Floppy garments and long hair may catch on fire while sandals may
cause someone to step on broken glass.
What types of gloves are preferred? - ANS Nitrile not latex--latex causes many allergic
reactions.
Four types of safety equipment - ANS -Fire Extinguisher
-Fire Blanker
-Eye Wash Station
-First Aid Kit
Two types of fire extinguishers - ANS -Carbon Dioxide: General purpose extinguisher
-Dry Chemical: Difficult cases such as an electrical fire.
Both are identified with tags
When one reads the label on a chemical container, what are the 3 most important pieces of
information? - ANS The name, concentration, and safety precautions
How many times should one read a label before opening the container? - ANS At least twice
Is it important to be exact when preparing a chemical reaction? - ANS Yes, if not exact, the
chemical could explode or something unexpected may arise
What should one do with leftover chemicals after an experiment? With the product of the
experiment? - ANS Dispose of it in a proper container; Turn it in for a grade
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