CHEM 310 Safety Review

Identify the precautions to take with exits in the lab.

1) locate the exits prior to the start of lab 2) do not block a door with an EXIT sign

Identify the description that applies to the substance represented by each NFPA diamond.

2-blue, 4-red, 0-yellow = has a flash point below room temperature 3-blue, 0-red, 2-yellow, blank-white = moderately unstable or reactive 3-blue, 0-red, 0-yellow, OX-white = oxidizer, not flammable 2-blue, 3-red, 0-yellow, blank-white = stable, has health risks but no special hazards

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

What information does not need to be included 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 disposal.

Determine when to put on disposable gloves for work in the lab.

Before handling any glassware or chemicals for the experiment

Read each statement regarding food and beverages in the lab and determine if each is true or false.

Chewing gum is okay in the lab as long as you don't blow bubbles. - False Tobacco products of all kinds are prohibited in lab. - True Beverages are allowed in lab as long as they are in containers with lids. - False Food items should not be brought into the lab. - True

What should you do after finishing work with a reagent bottle?

Close the bottle.

Read the Safety Data Sheet (click SDS icon below) of hydrogen peroxide to identify the recommended way to store this substance.

In a tightly closed container in a dry and well-ventilated place

Determine which items of personal protective equipment (PPE) you will likely use in a general chemistry lab.

Mask, Gloves, Labcoat

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.

NOT grasp the exterior of one glove with bare hand, peel off the first glove, a bare finger

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.

Which steps are necessary for cleaning a spill involving broken glass?

Pick up large pieces of glass with gloved hands.

What is generally the best approach when liquid from a large reagent bottle is needed in an experiment?

Pour some of the reagent from the bottle into a beaker, then use as needed in the procedure.

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 every time before you leave the lab?

Remove your labcoat, if you are wearing one. Wash your hands. Remove your gloves.

In lab, you may need to evaluate the odor or smell of a chemical. What is the best way to smell a chemical sample?

Use your hand to gently waft the smell toward you.

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

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

Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once.

While checking on a stirring solution, the solution splashes up towards your face. - goggles While picking up a buret, an unknown solution left by a previous solution drips onto your hand. - gloves While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. - Lab coat 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

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

Gather your belongings.

What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance?

Handling, storage, and reactivity information Personal protection and first aid recommendations Hazard warnings Identification and description of substance

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

Identify the safety equipment designed to deal with each emergency listed.

cuts or minor burns - first aid kit fire on a person - fire blanket large fire on the benchtop - fire extinguisher chemicals on cloths - safety shower chemicals on eyes - eyewash station

If you drop or break glassware in lab, first _____ then, ______. Finally, place all that material into the ____.

get thick gloves or dustpan, carefully collect all the broken glassware, broken glass container

Determine the best way to deal with each of the following items that may dangle into the way during lab work.

long earrings - remove loose bracelets - remove long necklaces - remove long hair - tie back or secure flowy sleeves - tie back or secure

Identify the section in which each type of information can be found on a Safety Data Sheet.

recommended personal protective equipment (PPE)----- exposure controls/personal protection incompatibility or reactivity with other chemicals -- (NOT exposure controls/personal protection) possible dangers and health effects ---- hazards identification recommendations in case of accidental contact with the chemical --- first aid measures chemical name and formula ---- identification

Move to the safety shower if you spill hazardous chemicals on your _______ Stand under the shower and ______. Remove clothing and continue flushing the area for _____

skin or clothing pull 15 minutes

Identify the equipment best suited for extinguishing each type of fire.

small benchtop fire - overturned beaker clothing fire - fire blanket large fire on the floor - fire extinguisher

Determine where to dispose of each type of waste.

titrant solution-nalgene bottle with cap unused solid reagent=solid waste container broken flask-box lined with puncture resistant bag syringe tips- sharps container unused solid reagent

What is the last step of any spill cleanup procedure?

Wipe down the affected area with detergent and water.

Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab?

Your lab partner

Which signs are typically posted in areas of active lab work?

a) Safety equipment signs b) Sign prohibiting food and drink c) Chemical storage signs d) Personal protective equipment (PPE) sign all of the above