safety review quiz (chem 112)

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

it is often helpful to remember the acronym PASS when using a fire extinguisher. fill in the word that corresponds with each letter to complete the steps needed for operation of this device.

P - "pull" the pin A - "aim" the nozzle at the base of the fire S - "squeeze" the lever slowly S - "sweep" the pray from side to side over the fire

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

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.

grasp the exterior of one glove with a gloved hand peel off the first glove a bare finger

which types of signs are posted to convey information about chemical storage?

hazard signs such as "flammable," "oxidizer," and "corrosive" national fire protection association (NFPA) diamond gas cylinder sign

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.

in case of skin contact: take off any contaminated clothing and rinse thoroughly if swallowed: rinse mouth with water if inhaled: move person to fresh air in case of eye contact: rinse with water for 15 minutes

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

lab coat gloves goggles

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

location of lab phone and first aid kit understanding of where to go should an emergency occur location of all exits contact information for emergency personnel

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

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

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.

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.

phosphoric acid: general hydrofluoric acid: special mercury: special methanol: general acetone: general

identify what each GHS symbol signifies about the type of chemical present in a bottle or storage cabinet.

picture of liquid pouring on hand and a black bar = corrosive chemical picture of flame = flammable chemical picture of flame on a circle = oxidizing chemical

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 recommendations in case of accidental contact with the chemical: first aid measures possible dangers and health effects: hazards identification chemical name and formula: identification incompatibility or reactivity with other chemicals: handling and storage

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

fill in the words to complete each step in liquid spill cleanup.

surround the area with "absorbent material", then cover the spill scoop up the material and place in a "plastic bag" place the bagged waste in a "solid waste container" wipe down the area with "detergent and water"

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 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.

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

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

your lab partner

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 on a chemical waste label?

a description of the experiment the chemicals were used for

identify the types of information that are necessary to communicate with emergency responders.

any other hazards present in the lab how the incident happened any chemicals involved in an incident

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

before handling any glassware or chemicals for the experiment

when should lab participants look at the Safety Data Sheet (SDS) of a substance?

before using the substance

determine where to dispose of each type of waste.

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

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

check labels or instructions before any disposal. always wear appropriate Personal Protective Equipment

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

dark cool dry

identify the precautions to take with exits in the lab.

do not block a door with an exit sign. locate the exits prior to the start of lab.

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

food items should not be brought into the lab: true chewing gum is okay in the lab as long as you don't blow bubbles: false beverages are allowed in lab as long as they are in containers with lids: false tobacco products of all kinds are prohibited in lab: true

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

gather your belongings.