A Mad Scientist’s Lab Safety Presentation · 2018. 9. 10. · Lab Procedures •Prepare a clear...

Lab Safety

Rules and Guidelines

The Big No-No’s• No eating or drinking in the lab.

– This means no gum, cough drops,

applying chapstick, chewing hair ends,

holding a pencil in your mouth, nail-biting,

etc.

– Never use lab glassware as food or drink

containers.

– Never taste any substances.

– Never inhale chemicals.

• No Horseplay of any kind.

• The only things you should be doing in the

lab are what I’ve told you to do.

Protect Yourself…• Use proper safety protection

– Goggles for eyes

– Lab apron to protect clothes

– Gloves to protect hands (chemical/heat)

• Tie hair back…its flammable!

• Roll up long sleeves & remove dangling

jewelry.

• Touch substances only when told to do so

• Smell substances using the proper technique

(wafting fumes toward you)

• Wash hands after handling substances and

before leaving the Lab

Lab Procedures• Prepare a clear work environment

– No books in the way

– Only materials needed for lab

• Read ALL instructions and wait for

permission to start; do not touch

materials until instructed

• Work calmly and carefully

• Observe good housekeeping

practices. Work areas should be kept

clean and tidy at all times.

• Inform the Mr. Banks of any spills so

they can be cleaned up properly

More Lab Procedures• Inform Mr. Banks of any broken

glassware

• Report broken or damaged equipment

immediately (DO NOT USE IT)

• Clean up work area completely when

you are finished

• Report all accidents or injuries to Mr.

Banks immediately (no matter how

minor)

Even More Lab Procedures• Wash hands after experiments.

• Be careful when using chemicals.

• Be precise and accurate in

measurements.

• Use caution around heat sources and

never reach over a flame.

• Never leave an experiment

unattended.

• When carrying sharp objects, carry

them with the point down.

Safety Equipment…

What and

Where?

Symbols…General

Warning

Biohazard

Explosive

Corrosive

Fire

Poison

NATIONAL FIRE PROTECTION

ASSOCIATION

(NFPA) HAZARD LABELS

Time for a presentation

How does a fire extinguisher work?

Time for a presentation

How does a fire extinguisher work?

• We can replicate the function of some fire

extinguishers using baking soda and vinegar.

Time for a presentation

Time for a presentation

O2

O2 O2 O2

O2

O2O2

O2O2

O2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

H2O

H2O

H2OH2O

H2OH2O

O2

O2

CO2

CO2

CO2

Time for a presentation

How does a fire extinguisher work?

• We can replicate the function of some fire

extinguishers using baking soda and vinegar.

• What is putting out the fire?

Sodium bicarbonate and vinegar => Sodium acetate and water and carbon dioxide

NaHCO3 + CH3COOH => CH3COO-Na+ + H2O + CO2 (g)

Time for a presentation

O2O2

O2

O2

O2O2O2O2

O2

O2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

H2O

H2O

H2OH2O

H2OH2O

O2

O2

CO2

CO2

CO2

CO2

CO2

CO2CO2

CO2

CO2

CO2

CO2

CO2

Time for a presentation

O2O2

O2

O2

O2O2O2O2

O2

O2

CO2

CO2

CO2

CO2

CO2

CO2

CO2CO2

CO2

CO2

CO2

CO2

CO2

Time for a presentation

• Ours is a Class ABC extinguisher and is able to

put out a wide range of fires

– Instead of CO2, it releases a powder flame retardant

chemical that prevents oxygen from reaching the fuel.

Thus extinguishing the fire in a similar manner to what

we just saw.