Chem 121l lab safety quiz:
Using the letters on the image, identify the significance of each section on the NFPA diamond.
- A: health - B: Flammability - C: reactivity - D: special hazards
What are the best practices for safely handling waste in the lab?
- Always wear appropriate Personal Protective Equipment. - Check labels or instructions before any disposal.
Identify the types of information that are necessary to communicate with emergency responders.
- Any chemicals involved in an incident - How the incident happened - Any other hazards present in the lab
Review the Safety Data Sheet (SDS) (click the SDS icon below) for hydrogen peroxide, then identify the best course of action for each type of chemical exposure.
- If inhaled: move person to fresh air. - In case of eye contact: rinse w water for 15 mins. - If swallowed: rinse mouth w water. - In case of skin contact: take off any contaminated clothing & rinse thoroughly.
In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station?
15 minutes
What information does not need to be included a chemical waste label?
A description of the experiment the chemicals were used for
Using the letters on the image, identify each component of the liquid waste set-up.
A: funnel B: primary container C: waste label D: secondary container
When should you start a new chemical waste container in the lab?
NOT When the contents of the current container completely fill the container to the brim
Most laboratory chemical spills are cleaned up in a similar manner, but acid and base spills require an extra step. What is this extra step?
Neutralize the spill before cleaning it up.
What is the first step for response to an emergency situation?
Remain calm and quiet, gather information, and assess the situation.
How should spill cleaning materials be discarded?
Seal in a labeled plastic bag, then place in the solid waste container.
Under what conditions should a student inform the instructor of a lab injury?
The instructor must be informed of all laboratory injuries.
Not sprinkle:
The spray from side to side over the fire:
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.
calmly, quiet, equipment
While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor.
closed-toe shoes
While picking up a buret, an unknown solution left by a previous solution drips onto your hand.
gloves
Read the Safety Data Sheet (SDS) (click the SDS icon below) of hydrogen peroxide to identify the type of eye protection recommended when handling this substance.
- safety glasses
While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench.
lab coat
Aim:
the nozzle @ the base of the fire.
How should students prepare to use chemicals in the lab?
- Locate the spill kits and understand how they are used. - Become familiar with the chemicals to be used, including exposure or spill hazards.
While checking on a stirring solution, the solution splashes up towards your face.
goggles
Determine when to put on disposable gloves for work in the lab.
NOT After setting up all the glassware but before handling chemicals & Before entering the laboratory room
Read the Safety Data Sheet (click SDS icon below) of hydrogen peroxide to identify the recommended way to store this substance.
NOT In a glass, leak-proof bottle on a shelf or cabinet
dentify the precautions to take with exits in the lab.
- Locate the exits prior to the start of lab. - Do not block a door with an EXIT sign.
Which steps are necessary for cleaning a spill involving broken glass?
- Stop the spread of the spill. - Soak up any spilled liquid with absorbent material.
What should you do every time before you leave the lab?
- remove your labcoat, if you are wearing one. - wash your hands. - remove your gloves.
What information is needed in order to be prepared for an emergency?
- Contact information for emergency personnel - Location of all exits - Understanding of where to go should an emergency occur - Location of lab phone and first aid kit
Identify the safety equipment designed to deal with each emergency listed.
- fire on person: fire blanket -chemicals in eyes: eyewash station - chemicals on clothes: safety shower - cuts or minor burns: first aid kit - large fire on the benchtop: fire extinguisher.
Identify the equipment best suited for extinguishing each type of fire.
- large fire on flor: fire extinguisher. - small benchtop fire: overturned beaker. - clothing fire: fire blanket
Broken flask:
box lined w puncture resistant bag
Titrant solution:
nalgene bottle w cap
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.
Unused solid reagent:
solid waste container
Squeeze:
the lever slowly
Pull:
the pin
Syringe tips:
sharps container.