Lab final exam - Section 1: lab safety

Fire on a person

Fire blanket

Chemicals on clothes

Safety shower

Cuts or minor burns

First aid kit

Large fire on benchtop

Fire extinguisher

Chemicals in eyes

Eyewash station

Under what conditions should a student inform the instructor of a lab injury

The instructor must be informed of all laboratory injuries

What is the best equipment to extinguish a large fire on the floor?

Fire extinguisher

What is the best equipment to extinguish a small benchtop fire?

Overturned beaker 

What is the best equipment to extinguish a clothing fire?

Fire blanke

 

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.

identify this safety sign

exit

identify this safety sign

eyewash station 

identify this safety sign

gas cylinder

identify this safety sign

NFPA diamond

identify this safety sign

Safety shower 

Which types of signs are used to convey information about chemical storage?

• Hazard signs (e.g., Flammable, Oxidizer, Corrosive)

• NFPA diamond

• Gas Cylinder sign

What is the first step for response to an emergency situation?

Remain calm and quiet, gather information, and assess the situation.

Identify the step that is not recommended when responding to an emergency.

Gather your belongings 

What information is needed in order to be prepared for an emergency?

• Contact info for emergency personnel

• Location of phone and first aid

• understanding emergency procedure

A student removes a chemical sample from a reagent bottle to be used in an experiment. What should be done with any excess chemical remaining from this sample after the experiment is complete?

Check and see if anyone else can use the chemical. If not, discard in the proper waste container. 

What is A

Health 

What is B 

Flammability

What is C

Reactivity

What is D

Special Hazards

In general, which characteristics are necessary for a location to be suitable for chemical storage?

• Dark 

• Dry

• Cool 

What are the correct steps for cleaning up a liquid spill in the lab?

1. Surround the area with absorbent pads, then cover the spill.

2. Scoop up the material and place it in a plastic bag.

3. Place the bagged waste in a solid waste container.

4. Wipe down the area with detergent and water.

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.

How should spill cleaning materials be discarded?

Seal in a labeled plastic bag, then place in the solid waste container.

Which SDS sections contain the following types of information?

• Incompatibility or reactivity with other chemicals → Handling and Storage

• Recommended PPE → Exposure Controls / Personal Protection

• Possible dangers and health effects → Hazards Identification

• Chemical name and formula → Identification

• Recommendations for accidental exposure → First Aid Measures

A

funnel

B

Primary Container

C

Waste label

D

Secondary Container

Determine where to dispose….

Determine where to dispose of….syringe tips

Sharps container

Determine where to dispose of…. titrant solution

Nalgene bottle

Determine where to dispose of….broken flask

Box lined with puncture resistant bag

Determine where to dispose of….unused solid reagent

Solid waste container

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 on a chemical waste label?

A description of the experiment the chemicals were used for

What are the best practices for safely handling waste in the lab?

• Always wear appropriate personal protective equipment 

• Check labels or instructions before any disposals 

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

How should you handle items that may dangle into the workspace during lab?

• Long necklaces → Remove

• Loose bracelets → Remove

• Long hair → Tie back or secure

• Long earrings → Remove

• Flowy sleeves → Tie back or secure

What should you do every time before you leave the lab?

• wash your hands 

• remove your gloves 

• remove your lab-coat, if you are wearing one 

What PPE will you be using in a general chemistry lab? 

• Goggles

• lab coat

• gloves

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 or lenses under your safety goggles for the whole experiment, but always check with your TA or Instructor for your school's policy

Determine when you should remove your goggles in the lab room.

When everyone in the room is done handling any chemicals or glassware

What is the correct way to smell a chemical

wafting