Lab Safety/Math Quiz

What information does not need to be included on a chemical waste label: Relative amounts of chemical compounds in the container The date the waste container was filled completely Names of the chemical compounds present in the container A description of the experiment the chemicals were used for

A description of the experiment the chemicals were used for

exit sign

green with man running to door

eyewash station lab safety sign

green with water and plus sign and eye

NFPA 2,3,0

stable, has health risks but no special hazards

Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab: The chemical bottle labels Your instructor's directions The chemical Safety Data Sheets Your lab partner

your lab partner

pico

10^-12

centi

10^-2

milli

10^-3

micro

10^-6

nano

10^-9

tera

10^12

kilo

10^3

mega

10^6

giga

10^9

Identify the types of information that are necessary to communicate with emergency responders: Any other hazards present in the lab The history of safety incidents in the lab How the incident happened Any chemicals involved in an incident

Any other hazards present in the lab How the incident happened Any chemicals involved in an incident

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. Remove gloves for better manipulation of the waste containers. Place any paper towels from the clean-up in the trash.

Check labels or instructions before any disposal. Always wear appropriate Personal Protective Equipment.

Identify the step that is not recommended when responding to an emergency: Alert your instructor. Proceed calmly and listen for instructions. Gather your belongings. Turn off equipment such as Bunsen burners and gas jets.

Gather your belongings.

Determine the best way to deal with each of the following items that may dangle into the way during lab work: loose bracelets long earrings long hair flowy sleeves long necklaces

Remove Remove Tie back or secure Tie back or secure Remove

Which steps are necessary for cleaning a spill involving broken glass? Select one or more: Stop the spread of the spill. Soak up any spilled liquid with absorbent material. Pick up large pieces of glass with gloved hands. Wash off the broken glass for recycling.

Stop the spread of the spill. Soak up any spilled liquid with absorbent material. Pick up large pieces of glass with gloved hands.

In lab, you may need to evaluate the odor or smell of a chemical. What is the best way to smell a chemical sample: Vigorously shake the sample until the smell travels to you. Hold the sample under your nose and slowly sniff. Use your hand to gently waft the smell toward you. Put your head in a fume hood as you heat the sample in it.

Use your hand to gently waft the smell toward you.

When cleaning a buret, begin by coating the inside with _________. Empty most of it out, then drain the rest by ____________. Rinse with _________, then hang upside-down on a buret rack

detergent solution opening the stopcock DI water

scientific notation

displaying numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10.

Liquid waste should be added into the appropriate primary waste container using the _______. Containers that directly hold the waste are the __________. You will need to know which type of waste you are handling to choose between _______ and __________. The ___________ around the primary waste containers can catch any possible splashes or spills that escape the funnel. The liquid waste containers need to have __________.

funnel primary waste containers organic and aqueous liquid waste secondary container waste labels on them

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

NFPA 2,4,0,COR

has a flash point below room temperature

which PPE will you likely use in a gen chem lab

nitrile gloves, a labcoat, and safety goggles

use conversion factors to convert between units. the conversion factor should be set up so that the

units of the starting measurement are on the bottom to cancel and give the new units on top

Which procedure cannot be performed on a hot plate, requiring a Bunsen burner instead: Heating water to boiling for a water bath Heating an isolated solid to dry it Heating a crucible to remove water from a hydrate Heating a solvent to help the solute dissolve

Heating a crucible to remove water from a hydrate

NFPA 3,0,0,OX

oxidizer, not flammable

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

skin/clothing, pull, 15 mins

NFPA diamond key

blue for health, red for fire, yellow for reactivity, and white for special hazards. Numbers from 0 to 4 in the three upper diamonds represent increasing levels of risk, and special hazards are listed in the bottom white diamond.

What is generally the best approach when liquid from a large reagent bottle is needed in an experiment? Dispense the liquid directly from the reagent bottle whenever it is needed. Insert a pipet into the reagent bottle as many times as needed to get the desired amount of liquid. Pour some of the reagent from the bottle into a beaker, then use as needed in the procedure. Pour liquids directly from a reagent bottle only when a funnel is placed securely underneath.

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

What should you do every time before you leave the lab? Remove your gloves. Wash your hands. Turn off the lights. Remove your labcoat, if you are wearing one.

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

What should you do after finishing work with a reagent bottle? Select one or more: Return the bottle to its proper storage location. Close the bottle. Place the bottle in the Solid Waste container. Leave the bottle open in case someone else needs it.

Return the bottle to its proper storage location. Close the bottle.

How should spill cleaning materials be discarded? Seal in a labeled plastic bag, then place in the solid waste container. Leave them in the fume hood for the instructor. Discard all components in the broken glass container. Rinse the cleaning materials in the sink, then place them in the trash can.

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

Determine where to dispose of each type of waste: unused solid reagent syringe tips titrant solution broken flask

Solid waste container Sharps container Nalgene bottle with cap Box lined with puncture resistant bag

Determine when to put on disposable gloves for work in the lab: After setting up all the glassware but before handling chemicals Before entering the laboratory room After cleaning all the glassware for the experiment Before handling any glassware or chemicals for the experiment

Before handling any glassware or chemicals for the experiment

Identify the section in which each type of information can be found on a Safety Data Sheet: incompatibility or reactivity with other chemicals recommended personal protective equipment (PPE) chemical name and formula possible dangers and health effects recommendations in case of accidental contact with the chemical

Handling and Storage Exposure Controls/Personal Protection Identification Hazards Identification First Aid Measures

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 Exit sign Safety equipment signs such as "Safety Shower" and "Eyewash Station"

Hazard signs such as "Flammable," "Oxidizer," and "Corrosive" National Fire Protection Association (NFPA) diamond Gas Cylinder sign

Where should glassware be stored after it is cleaned: On one side of the sink, opposite from the side where the dirty glassware is kept Out on the lab bench to allow for air-drying In a drying oven, or designated locations such as drawers or buret racks At the front of the lab, stacked neatly in a pile

In a drying oven, or designated locations such as drawers or buret racks

What should you do every time you are about to heat glassware on a hot plate: Inspect the hot plate for frayed cords Measure the height and width of the glassware Check that there are no cracks in the glassware Ensure that the glassware is designed for heating

Inspect the hot plate for frayed cords Check that there are no cracks in the glassware Ensure that the glassware is designed for heating

Match each lab incident to the item of PPE that will protect you from it: While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. While picking up a buret, an unknown solution left by a previous solution drips onto your hand. While checking on a stirring solution, the solution splashes up towards your face

Lab coat closed toed shoes gloves goggles

What information is needed in order to be prepared for an emergency: Location of all exits Full inventory of all chemicals present in the lab Understanding of where to go should an emergency occur Contact information for emergency personnel Location of lab phone and first aid kit

Location of all exits Understanding of where to go should an emergency occur Contact information for emergency personnel Location of lab phone and first aid kit

identify the best course of action for each type of chemical exposure: If inhaled In case of skin contact If swallowed In case of eye contact

Move person to fresh air. Take off any contaminated clothing and rinse thoroughly Rinse mouth with water. Rinse with water for 15 minutes.

Under what conditions should a student inform the instructor of a lab injury: The instructor needs to be alerted only if he or she needs to call 911. The instructor must be informed of all laboratory injuries. The instructor should be alerted only if the lab injury appears different from injuries the student has experienced previously. The instructor should be alerted only if the injury involves broken skin.

The instructor must be informed of all laboratory injuries.

identify the type of eye protection recommended when handling hydrogen peroxide: Safety glasses Tightly fitting safety goggles Eyeglasses with safety shields Any of the choices listed are adequate eye protection.

Tightly fitting safety goggles

What is the purpose of stirring a solution while it is being heated: To slow down any reactions that occur in the solution To prevent the solute from dissolving into solution To help evenly distribute heat throughout the solution To encourage sudden boiling in the solution

To help evenly distribute heat throughout the solution

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 When the contents of the current container completely fill the container to the brim When you need to dispose of another chemical that is compatible with chemicals in the current container When you accidentally spill chemicals down the side of the current container

When the contents of the current container are a couple inches below the brim of the container

Fill in the words to complete each step in liquid spill cleanup. 1. Surround the area with ______ then cover the spill 2. Scoop up the material and place in a _________ 3. Place the bagged waste in a __________ 4. Wipe down the area with __________

absorbent material plastic bag solid waste container detergent and water

Read each statement regarding food and beverages in the lab and determine if each is true or false: Beverages are allowed in lab as long as they are in containers with lids. Chewing gum is okay in the lab as long as you don't blow bubbles. Tobacco products of all kinds are prohibited in lab. Food items should not be brought into the lab.

false false true true

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

NFPA diamond 3,0,2

moderately unstable or reactive

Determine the safest option in the lab if you need your vision to be corrected: Wear your corrective glasses or lenses as normal for the whole experiment Wear safety goggles while working and switch to corrective glasses when you need to read something 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 Wear safety goggles without any corrective lenses for the whole experiment

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. Select one: When you have finished cleaning up your chemicals and glassware Whenever you need to lean in close to get a volume reading When everyone in the room is done handling any chemicals or glassware Whenever your goggles become foggy or uncomfortable

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

Identify tools that are ideal for cleaning glassware: Brushes Reusable cloths Detergent and water Steel wool

brushes detergent and water

Identify the equipment best suited for extinguishing each type of fire. small benchtop fire clothing fire large fire on floor

overturned beaker fire blanket fire extinguisher