CHE 112 Labflow Safety Review Quiz

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? Select one or more:

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

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

Example

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

Gloves, labcoat, goggles

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

titrant solution ->Nalgene bottle with cap unused solid reagent ->Solid waste container syringe tips ->Sharps container broken flask ->Box lined with puncture resistant bag

Identify each lab safety sign pictured.

Part 1

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

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

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

Read the Safety Data Sheet (SDS) (click the SDS icon below) of hydrogen peroxide to identify the type of eye protection recommended when handling this substance.

Tightly fitting safety goggles

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

Before handling any glassware or chemicals for the experiment

If you drop or break glassware in lab, first______ . Then, _________________. Finally, place all that material into the ____________________.

1. get thick gloves or dustpan 2.carefully collect all the broken glassware 3. broken glass container

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

Before using the substance

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

Descriptions

Using the letters on the image, identify each component of the liquid waste set-up. A= B= C= D=

A Funnel B Primary container C Waste label D Secondary container

Identify each lab safety sign pictured.

Part 2

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

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 types of information that are necessary to communicate with emergency responders. Select one or more:

1. Any chemicals involved in an incident 2. How the incident happened 3. Any other hazards present in the lab

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

1. Hazard signs such as "Flammable," "Oxidizer," and "Corrosive" 2. Gas Cylinder sign 3. National Fire Protection Association (NFPA) diamond

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.

If swallowed Rinse mouth with water. If inhaled Move person to fresh air. In case of skin contact Take off any contaminated clothing and rinse thoroughly In case of eye contact Rinse with water for 15 minutes.

Fill in the words to complete each step in liquid spill cleanup. 1. Surround the area with absorbent material, then cover the spill. 2. Scoop up the material and place in a plastic bag. 3. Place the bagged waste in a solid waste container. 4. Wipe down the area with detergent and water.

1. absorbent material 2. plastic bag 3. solid waste container 4. detergent and water

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 Food items should not be brought into the lab. -->True Beverages are allowed in lab as long as they are in containers with lids. -->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?

Use your hand to gently waft the smell toward you.

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

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

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 flowy sleeves Tie back or secure long necklaces Remove long hair Tie back or secure

small benchtop fire large fire on floor clothing fire

overturned beaker fire extinguisher fire blanket

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

cool dry dark

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 spray from side to side over the fire.

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.

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

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