Transcript SCIENCE SAFETY

 Assume ALL chemicals are dangerous!
 Clean up all spills IMMEDIATELY! No matter how small
the spill is! - ask Mr. C for help with this!
 YOU are responsible for keeping the lab safe and clean!
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 Wash your hands after working with chemicals!
 NEVER eat or drink when chemicals are around
 Some chemicals can be put down the drain with water.,
but many CANNOT!
 Always ask Mr. C where to put chemicals. I will often
have a waste container to put them in, but I may tell
you to use the trash can or sink.
 ALWAYS ASK FIRST!
 Before we learn how to extinguish fires, we first need
to know a little about how they work.
 The fire triangle to the right shows
the three things that must be
present at the same time in order
for a fire to occur.
 Take any of these away and
the fire will be extinguished!
Not all fires are the same.
We classify fires based on
the type of fuel they
burn.
If you use a fire
extinguisher on the
wrong type of fire you
can in fact make it worse!
Most extinguishers have a
label showing which fires
they can fight. – OURS IS
ABC only!
1) Assist any person in immediate danger to safety if it
poses no danger to yourself
2) Activate the building fire alarm or call 911.
3) Only after you have done these two things should you
attempt to fight the fire if :
• You know what is burning (Remember you could make it
worse by say throwing water on an electrical or oil fire).
• The fire is no bigger than a kitchen garbage can. Bigger
fires can spread much faster than you could anticipate.
• You have an escape route that isn’t blocked.
ALWAYS KEEP AN EXIT TO YOUR BACK!!!!
It's easy to remember how to use a fire extinguisher if
you can remember the acronym PASS, which stands
for:
Pull
Aim
Squeeze
Sweep
Pull the pin.
This will allow
you to
discharge the
extinguisher.
Aim at the
fire.
base of the
If you aim at the flames
(which is frequently the
temptation), the
extinguishing agent will
fly right through and do
no good. You want to hit
the fuel.
Squeeze the top
handle or lever.
This depresses a button
that releases the
pressurized
extinguishing agent in
the extinguisher.
Sweep from side to
side until the fire is
completely out.
Start using the
extinguisher
from a safe distance
away, then move forward.
Once the fire is out, keep
an eye on the area in case
it re-ignites.
 Burn, baby, burn!
 Let the fire run out of fuel
 (not a good idea usually )
 Cover the fire to smother it
 Fire blanket – no access to
oxygen
 Remove the heat….
 Turn off heat source
 Know where exits are – there are 2
 Exits should always be kept clear. Backpacks
should stay under desks to prevent tripping
and injury if we have to evacuate quickly!
 Never stick anything in the outlets- it can
remain stuck and cost A LOT of $ to remove.
 shutoff
1. Outlets are off if the valves are
perpendicular (at a right angle) to the nozzle.
ON
OFF
 Never stick anything in the outlets- it can
remain stuck and cost A LOT of $ to remove.
 shutoff
1. Outlets are off if the valves are
perpendicular (at a right angle) to the nozzle.
 2. Gas and Air Master OFF switch is behind
the cart in the front.
 Make sure they are off before you touch.
 Most injuries occur because the plate is
hot even after it is turned off.
still
 NEVER wrap the cord around a hot plate!
Melted cords can lead to electrocution!
Don’t complete the circuit!
Don’t be a pathway to the ground.
Electrical shutoff: big red button
use if someone is being electrocuted!
There are TWO shutoff buttons!
Know where they are!
Go to the closet one!
1) Always pour acids into water. (do as you otter  )
 If anything splashes out it will most likely be water.
 Pouring water into acid can create an exothermic
reaction that explodes!
2) Always wear goggles when working
with chemicals.
3) Never smell a chemical directly. Waft it with you hand
to your nose.
 If you take off safety goggles with chemicals
around, you could lose your eyes!
 If I have to ask you to keep putting goggles
back on consequences could be:
 Loss of lab points
 Loss of credit in the class! (for not
complying with safety rules!)
 See egg demo…..
Eyewash
.
•If a chemical gets into
your eyes, don’t notify
me first- GO DIRECTLY
TO THE EYEWASH!
•Wash eyes for at least
10-15 minutes, even if
there is no pain or
irritation.
Contacts
•Contacts can pose a greater risk of eye
injury when working with chemicals.
•Some chemicals will literally melt the
contact to your eye.
•It is strongly recommended (but not
required) that you wear glasses and not
contacts during a chemistry lab.
Fume Hood
•In the back of
the room.
•All you need to
know about it, is
not to mess with
or touch
anything inside
it.
Safety Shower
•If you spill dangerous
chemicals onto yourself, you
will need to remove the
contaminated clothes and
stand under the shower until
I say it is ok.
•Don’t worry everyone will
leave the room.
I have NEVER needed to use
one before, but it is there
“just in case” 
First Aid Kit
•Found in a Red
Backpack up front…
ask Mr. C first!
•And report ALL
accidents to Mr. C!
 Locate the following and draw them on n the map of the
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classroom:
Fire extinguisher
Fire blanket
Eye wash
Safety shower
Both exists
Google cabinet
Emergency gas shutoff
Emergency electrical shutoff
Fume hood
First aid kit (in red backpack)