be safe! in the chemistry lab

Be Safe!Be Safe!In the Chemistry LabIn the Chemistry Lab

Dr. Deborah YagerDr. Deborah YagerCVHS ChemistryCVHS Chemistry

Goggles must be worn anytime chemicals, heator glassware are used.

Hair must be tied back and dangling jewelry removed.

Basic Lab SafetyBasic Lab Safety

All long sleeves must be removed or rolled back.

Best footwear are closed-toed shoes, not sandals or open-toed shoes.

No food or drinks allowed at the lab benches.

No horseplay during lab activities!

Basic Lab Safety Basic Lab Safety (cont)(cont)

No unauthorized lab experiments allowed.

For success in the chemistry lab, always For success in the chemistry lab, always follow your teacher’s instructions!follow your teacher’s instructions!

Working with Heat SourcesWorking with Heat Sources

We will work with two heat sources:

bunsen burnerbunsen burner hot platehot plate

(i.e. sleeve, long hair,or combustible chemicals such as alcohol)should never be placed near an open flame.

Flammable materialsFlammable materials

Working with Heat Sources Working with Heat Sources (cont)(cont)

Handle hot glass with tongs.““cold”cold” plate plate hothot plate plate

When heating a substance in a test tube,point the open end of the tube AWAYfrom people.

looks the same as !ColdCold glass glass hot glasshot glass

BEWARE!!BEWARE!!

If a laboratory fire erupts, notify your teacher immediately.

Laboratory Fire SafetyLaboratory Fire Safety

A fire blanketfire blanket can also be used toextinguish a burning object.

Every classroom has a fire blanketfire blanket.

If an object on a person (i.e. sleeveor hair) catches fire, use the blanket.

If necessary, stop, drop and roll.

If a large laboratory fire develops,

Laboratory Fire Safety Laboratory Fire Safety (cont)(cont)

To use a fire extinguisher effectively, follow the PASS technique:

use a fire extinguisherfire extinguisher..

Every classroom has a .fire extinguisherfire extinguisher

Our classrooms and hallways have Class Cfire extinguishers, which can extinguish paper/wood and other combustibles, flammableliquids such as gasoline, and electrical fires.

Pull the pin.

Aim low at the base of the fire.

Squeeze the top handle or lever.

Sweep from side to side until the fire is completely out.

P.A.S.S.P.A.S.S.

All lab chemicals are to be considered dangerous.Follow instructions and report incidents to your teacher!

Should you feel a chemical irritation on your skinor hands, wash the area immediately with water.

Chemical SafetyChemical Safety

If a large part of your body is involved, use the emergency showeremergency shower located in your classroom.

If a chemical burns your eye, use the emergency eye wash stationemergency eye wash station.

Chemical wash station

After completion of a lab activity, followteacher instructions for chemical disposal.

Some chemicals are safe to dispose of downthe sink. Others require collection and properdisposal. Know what to do before doing it!

Chemical Safety Chemical Safety (cont)(cont)

In the event of glass breakage, never handle broken glass with your bare hands. Notifyyour teacher for assistance, and put brokenglass in the glass waste box in Rm 768.

Chemical wastecollection

Major EmergencyMajor Emergency

In the event of a major emergency, such as an earthquake or fire, hit the Main Shutoff SwitchMain Shutoff Switch located in the front of the classroom. Main ShutoffMain Shutoff

SwitchSwitch

This switch turns off all electricity to the classroom, and is only to be used in an emergency.

Enjoy your chemistry explorations!Enjoy your chemistry explorations!

Dr. Deborah YagerDr. Deborah YagerCVHS ChemistryCVHS Chemistry

Be Safe!Be Safe!