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Chem 225 Safety Review
Terms in this set (32)
Identify the safety equipment designed to deal with each emergency listed
1. chemicals on clothes
2. fire extinguisher
3. cuts or minor burns
4. chemicals in eyes
5. fire on a person
1. safety shower
2. fire extinguisher
3. first aid kit
4. eyewash station
5. fire blanket
In case of accidental contact with chemicals how long should the eyes be flushed at the eyewash station?
Under what conditions should a student inform the instructor of a lab injury?
The instructor must be informed of all laboratory injuries
Which signs are typically posted in areas of active lab work?
Personal protective equipment sign, chemical storage signs, safety equipment signs, and signs prohibiting food and drink
What types of signs are posted to convey information about chemical storage?
hazard signs such as "flammable", "oxidizer", and "corrosive"
National Fire protection association diamond
Gas Cylinder sign
What is the main precaution to take if a Gas Cylinder sign is present in the lab?
Visually check that the gas cylinder is restrained but keep a safe distance from it
When an alarm sounds in the laboratory, it is important to respond _______________ and remain ______________. Listen for any other instructions, turn off any _____________ in use, and be prepared to leave immediately.
Identify the step that is NOT recommended when responding to an emergency
Gather your belongings
What is the first step for response to an emergency situation?
Remain calm and quiet, gather information, and assess the situation.
What should you do after finishing work with a reagent bottle?
Return the bottle to its proper storage location; close the bottle
Using the letters on the image, identify the significance of each section on the NFPA diamond. (starting at the top and going clockwise in order)
B (red portion): Flammability
C (yellow portion): Reactivity
D (white portion): Special Hazards
A (blue portion): Health
How should students prepare to use chemicals in the lab?
Become familiar with the chemicals to be used, including exposure or spill hazards
Locate the spill kits and understand how they are used
Most chemicals can be cleaned up with a general spill kit, but a few chemicals require specialized spill procedures. For each substance listed, determine whether a general spill kit is sufficient or if a specialized spill kit is needed.
1. phosphoric acid
4. hydrofluoric acid
How should spill cleaning materials be discarded?
Seal in a labeled plastic bag, then place in the solid waste container
Read the safety data sheet of hydrogen peroxide to identify the recommended way to store this substance.
In a tightly closed container in a dry and well-ventilated place
Identify the section in which each type of information can be found on a safety data sheet
1. recommendations in case of accidental contact with the chemical
2. recommended personal protective equipment
3. possible dangers and health effects
4. incompatibility or reactivity with other chemicals
5. chemical name and formula
1. First aid measures
2. exposure controls/personal protection
3. Hazards identification
4. Handling and Storage
Read the safety data sheet of hydrogen peroxide to identify the type of eye protection recommended when handling this substance
tightly fitting safety goggles
If you drop or break glassware in lab, first _____________. Then, _______________. Finally, place all that material into the _____________.
1. Get thick gloves or dustpan
2. carefully collect all the broken glassware
3. broken glass container
Determine where to dispose of each type of waste
1. syringe tips
2. broken flask
3. unused solid reagent
4. titrant solution
1. sharps container
2. box lined with puncture resistant bag
3. solid waste container
4. nalgene bottle with cap
Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab?
Your lab partner
What information does not need to be included in a chemical waste label?
A description of the experiment the chemicals were used for
What are the best practices for safely handling waste in lab?
Always wear appropriate personal protective equipment
Check labels or instructions before any disposal
When should you start a new chemical waste container in the lab?
When the contents of the current container are a couple inches below the brim of the container
Changing gloves often will minimize the spread of chemicals. To properly remove gloves, first, ___________, and then, ____________. Then insert __________ between the interior edge of the second glove and the skin, and remove the second glove
1. grasp the exterior of one glove with a gloved hand
2. peel off the first glove
3. a bare finger
Determine the best way to deal with each of the following items that may dangle into the way during lab work.
1. loose bracelets
2. long necklaces
3. long earrings
4. flowy sleeves
5. long hair
4. tie back or secure
5. tie back or secure
Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once.
1. While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor
2. While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench
3. While checking on a stirring solution, the solution splashes up towards your face
4. While picking up a buret, an unknown solution left by a previous solution drips onto your hand
1. closed toe shoes
2. Lab coat
What should you do every time before you leave the lab?
remove your lab coat if you are wearing one; remove your gloves; wash your hands
Determine when to put on disposable gloves for work in the lab
before handling any glassware or chemicals for the experiment
Determine the safest option in the lab if you need your vision to be corrected
Wear corrective glasses under your safety goggles for the whole experiment
Determine when you should remove your goggles in the lab room
when everyone in the room is done handling any chemicals or glassware
Read each statement regarding food and beverages in the lab and determine if each is true or false
1. Beverages are allowed in lab as long as they are in containers with lids
2. Chewing gum is okay in the lab as long as you don't blow bubbles
3. Tobacco products of all kinds are prohibited in lab
4. Food items should not be brought into the lab
Why should bunsen burners not be used when heating organic materials?
Many organic materials are flammable and could cause a fire
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