Lab Safety Review Quiz - Lab Flow

What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance? Select one or more: Literature examples of use of the substance Hazard warnings Identification and description of substance Handling, storage, and reactivity information Personal protection and first aid recommendations

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

Review the Safety Data Sheet (SDS) (click the SDS icon below) for potassium hydroxide, then identify the best course of action for each type of chemical exposure. In case of skin contact ___ If swallowed ___ If inhaled ___ In case of eye contact ___

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

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

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

Why should Bunsen burners not be used when heating organic materials? Select one: Organic materials cause Bunsen burners to malfunction. Many organic materials are flammable and could cause a fire. Organic materials should never be heated. Organic materials need more heat than provided by the Bunsen burner.

Many organic materials are flammable and could cause a fire.

A student removes a chemical sample from a reagent bottle to be used in an experiment. What should he do with any excess chemical remaining from this sample after the experiment is complete? Select one: Check and see if anyone else can use the chemical. If not, discard in the proper waste container. Conduct a second trial of the experiment with the excess chemical. Discard the chemical down the sink under running water. Clean a spatula thoroughly, then use it to add the chemical back into the reagent bottle.

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? Select one or more: Check labels or instructions before any disposal. Remove gloves for better manipulation of the waste containers. Always wear appropriate Personal Protective Equipment. Place any paper towels from the clean-up in the trash.

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

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

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

Which types of signs are posted to convey information about chemical storage? Select one or more: 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

When should you start a new chemical waste container in the lab? Select one: 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

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

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

Your lab partner

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 equipment best suited for extinguishing each type of fire. clothing fire = ___ small bench top fire = ___ large fire on floor = ___

clothing fire = fire blanket small bench top fire = overturned beaker large fire on floor = fire extinguisher

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

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

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 first ___ 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 of the first glove a bare finger

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. hydrofluoric acid general or special hydrofluoric acid methanol acetone phosphoric acid mercury

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

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? Select one: Neutralize the spill before cleaning it up. Be sure to replace the spilled acid or base. Tell all other lab participants to evacuate the lab as quickly as possible. Alert the proper authorities about the corrosive chemical waste.

Neutralize the spill before cleaning it up.

What is generally the best approach when liquid from a large reagent bottle is needed in an experiment? Select one: Pour liquids directly from a reagent bottle only when a funnel is placed securely underneath. Dispense the liquid directly from the reagent bottle whenever it is needed. Pour some of the reagent from the bottle into a beaker, then use as needed in the procedure. 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.

Which signs are typically posted in areas of active lab work? Select one or more: Sign prohibiting food and drink Chemical storage signs Personal protective equipment (PPE) sign Safety equipment signs

Sign prohibiting food and drink Chemical storage signs Personal protective equipment (PPE) sign Safety equipment signs

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.

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 should be alerted only if the injury involves broken skin. The instructor should be alerted only if the lab injury appears different from injuries the student has experienced previously. The instructor must be informed of all laboratory injuries.

The instructor must be informed of all laboratory injuries.

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

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

In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station? 5 minutes Until the irritation is gone 15 minutes 30 minutes

15 minutes

Using the letters on the image, identify the significance of each section on the NFPA diamond.

A = Healthy B = Flammability C = Reactivity D = 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? Select one: Names of the chemical compounds present in the container The date the waste container was filled completely A description of the experiment the chemicals were used for Relative amounts of chemical compounds in the container

A description of the experiment the chemicals were used for

Identify the types of information that are necessary to communicate with emergency responders. Select one or more: Any chemicals involved in an incident 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

How should students prepare to use chemicals in the lab? Select one or more: Become familiar with the chemicals to be used, including exposure or spill hazards. Locate the spill kits and understand how they are used. Check labels and discard chemicals that are not 100% pure. Sort the lab chemicals in alphabetical order for quick access.

Become familiar with the chemicals to be used, including exposure or spill hazards. Locate the spill kits and understand how they are used.

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

Before handling any glassware or chemicals for the experiment

When should lab participants look at the Safety Data Sheet (SDS) of a substance? Select one: After completing work with the substance While working with the substance in lab Before using the substance Only if the substance is perceived to be dangerous

Before using the substance

All lab participants must remain prepared to use safety equipment in case of emergency. Identify the components of effective preparation. Select one or more: Being familiar with how safety equipment is used Researching alternatives to the safety equipment available in lab Practicing with safety equipment before the start of each lab session Knowing what safety equipment is available Understanding where the safety equipment is located

Being familiar with how safety equipment is used Knowing what safety equipment is available Understanding where the safety equipment is located

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

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 Chewing gum is okay in the lab as long as you don't blow bubbles. = False

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

Use your hand to gently waft the smell toward you.

What is the main precaution to take if a Gas Cylinder sign is present in the lab? Test out the regulator on the gas cylinder to make sure it is working properly. Open the valve on the gas cylinder periodically to release pressure. Remove the strap from around the gas cylinder to use it in the lab. Visually check that the gas cylinder is restrained but keep a safe distance from it

Visually check that the gas cylinder is restrained but keep a safe distance from it

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

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

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

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

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

incompatibility or reactivity with other chemicals = handling and storage chemical name and formula = identification recommended personal protective equipment (PPE) = exposure controls/personal protection possible dangers and health effects = hazard identification recommendations in case of accidental contact with the chemical = first aid measures

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 transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. ___ 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. ___ While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. ___

lab coat gloves goggles closed-toe shoes

Move to the safety shower if you spill hazardous chemicals on your ___. Stand under the shower and ___ the level. Remove clothing and continue flushing the area for __.

skin or clothing pull 15 minutes

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

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