Lab Safety Quiz

Cuts from Glass (Treatment)

- Allow the cut to bleed for a short time to rid yourself of contaminants and put it under cold running water after notifying your teacher - Serious injuries need immediate medical attention and bleeding must be controlled by applying pressure

Fire (Prevention)

- Always be aware of open flames in lab - Make sure to have proper attire: no baggy clothing and loose hair and clothes tied back - A fire in a container can be extinguished by covering the container and spraying the base with extinguisher foam

Fire (Description)

- Any open flame may cause a fire. - Improperly mixing chemicals may result in a fire - Close proximity between flammable substances and a Bunsen burner flame/hot plate may result in a fire

Thermal Burns (Prevention)

- Be aware that hot & cold equipment appear identical at times - Hold your hand near an item to feel for heat before holding it

Chemical Burns (Prevention)

- Chemicals marked as corrosive or irritant should be treated with care as these burns can cause severe permanent damage. - Wear safety goggles, even during clean up - Mixing concentrated acids/bases is an additional burn hazard when mixed with water. The heat can cause the mixture to boil and splash. - To properly smell an odor from a chemical, waft it: Use your hand to wave vapors towards your nose. Do not inhale deeply. Do not put your nose near the chemicals.

Cuts from Glass (Prevention)

- Cuts may occur when thermometers or other glass instruments are forced into rubber stoppers - the stopper hole should be lubricated with glycerol or water to smooth the progress of the tube's movement - Glass should not be held with bare hands but with cloth towels and an easygoing twisting motion to move the tub should be used. - Cuts can also be avoided by getting rid of chipped/cracked glassware and using gloves whenever cleaning up broken glassware

Fire (Treatment)

- Do not run if hair/clothing catches fire because the flames will be fanned - Stop. Drop. And roll in order to smother the flames while shouting for help - If you see someone in this situation, grab a fire blanket to smother flames and help the victim to a shower - If a bench catches fire, turn off all gas outlets and unplug all appliances - Use fire blanket to smother fire, NOT safety shower - Never spray a fire extinguisher directly into a person's face. Use a blanket instead. - In the case that the fire isn't extinguished quickly, vacate the lab, crawl if necessary.

Thermal Burns(Treatment)

- Immediately run cold water over affected area and apply it until pain is reduced - Greases and oils shouldn't be used to treat burns since they trap heat. Medical assistance should be called for anything series. - Immediately alert the teacher if you're burned.

Poisoning (Treatment)

- Inform instructor immediately. - Do not ingest any other substance - Go to nurse immediately and contact poison control

Poisoning (Description)

- Poisoning occurs when toxic chemicals enter the body - This may occur through the mouth, nose, eyes, skin, etc.

Chemical Burns (Treatment)

- Rinse the affected area - Chemicals in the eye should be flushed for under water for 20 minutes and call for help - If large amounts of chemicals are spilled on clothing, use the safety shower

Chemical Burns (Description)

- Skin or mucous membrane is injured through contact with a substance. - Corrosive chemicals can cause intense burns. - Irritants can irritate the skin, eyes, nose, throat, and lungs.

Poisoning (Prevention)

- Toxic chemicals are notated by the symbol: - Do not touch chemicals and clean up spills - Keep hands away from your face in order to prevent chemicals from coming into contact with hands, mouth, nose, and eyes - An odor can indicate that a chemical reaction has occurred - Some gases are toxic if inhaled. Use your hand to fan the gas towards your nose and sniff it instead of inhaling it.

What must always be worn in the lab?

Aprons, close toed shoes, and goggles

What is important to know about when u=working with reagents?

Unused chemicals should not be returned to a reagent bottle in order for contamination to be avoided. Never put a pipet, spatula, dropper, etc. into a reagent. Pour the reagent into a small beaker to use as for supply.

What is the most important thing to remember about diluting acids?

When diluting acids, always pour acids slowly into the water and stir to get rid of any generated heat. IMPORTANT: Water should never be poured into concentrated acid.

What must never be worn in the lab?

bulky, loose-fitting clothes or dangling jewelry.

What should you know how to use and be aware of in the lab?

eyewash fountains, fire extinguishers, emergency shower, and fire blanket

What should you do if a spill (especially concentrated acid/base spills) occurs?

immediately inform the teacher. All accidents, no matter how insignificant, should be reported immediately.

Before each procedure what should you do?

read, reread, and understand all forms of direction and instruction, especially before carrying out the experiment.

If you are using a flammable liquid, what equipment specifically must be used?

use a hot plate

After each lab procedure, what should you do?

wash hands diligently with soap and water

What is important to know about when working with chemicals?

Never ingest any chemicals and keep hands away from your face when working with them.

Should you ever work if a teacher is not present?

No, do only what you are instructed to do by your teacher when she is present.

Thermal Burns (Description)

Touching hot equipment or being too close to an open flame will cause a thermal (heat) burn

When heating a liquid, where must the test tube be?

Turned away from yourself and others

What should happen if there is a spill or broken glass?

It must be cleaned as soon as possible.

At the end of the lab, what must your station look like (generally)?

It should be clean!

What are some things to remember when working with open flames?

Long hair must be pinned or tied back and loose sleeves must be rolled up and you never leave a lighted Bunsen burner unattended.

Cuts from Glass (Description)

Cuts from glass can occur anytime skin is in contact with broken or chipped glass

What should happen if you notice the test tube set up is chipped or cracked?

Don't use it! According to the teacher's instruction, discard it properly.

What specifically (items) are not allowed in the lab?

Food, Drinks or Gum