lab safety
what can't you wear/have in the lab?
-no shorts, skirts, or open-toed shoes -no dangling jewelry -no books, backpacks, or purses in the lab area -no unauthorized experiments -no food, drinks, or gum
what can you wear/have in the lab?
-rolled up long sleeves -long hair tied back -wear safety goggles, lab coat, or apron
what should you do in case of accidents?
1. always notify the teacher first 2. sweep up any broken glass and dispose of as directed by your teacher 3. clean up spills immediately. if an acid is spilled, neutralize it with a base first (baking soda). if a base is spilled, neutralize with vinegar. 4. report any spills, accidents, or injuries to your injury immediately
in case of a fire...
1. turn off the gas source 2. if it's a small fire, cover with an inverted beaker, wet paper towel, or a fire blanket 3. if it's a large fire, use a fire extinguisher 4. stop, drop, and roll
dispose of waste products _______________________
according to instruction
always add _____ to _____ - never add _____ to _____! pour acids while ________
acids to water; water to acids; stirring
point the end of a test tube being heated _____________________________
away from yourself and others
always use _______ in the lab
caution
handle ________ carefully
chemicals
never heat a _________________
closed container
don't look directly unto a _________ that is being heated
container
do not place hot glassware ____________________ or in __________
directly on lab desk; cold water
know where ___________________ is stored
emergency equipment
clean and put away all _________ at the end of the lab period
equipment
don't touch your ___ ,____ , or _____ while working in the lab. this includes putting your pen or pencil in your mouth
face, eyes, or mouth
keep __________ away from open flames
flammables
lab safety is a _____ concept
group
don't let electrical cords ______________________________
hang over edges of lab bench
use caution and handle ______ glassware with _____ or ______
heated; tongs or gloves
what should you do if you have a chemical splash into your eyes?
hold eyes opened widely and over eye wash for fifteen minutes
how do you handle a chemical spill on your skin?
hold under water for fifteen minutes
no _________ in the lab
horseplay
push __________ in out of the way- keep aisles clear!
lab stools
don't use chemicals that are not _______
labeled
_______________ all directions
read and follow
never return _______ or _______ chemicals to the stock bottle
spilled or unused
don't _____ anything in the lab unless instructed to do so
taste
heated and cooled glass look __________
the same
why can't you use spilled or unused chemicals to the stock bottle?
the substance could be contaminated
never leave a lit burner __________ and never reach over an open flame
unattended
if you are covered with a large spill on your body, you should...
use the safety shower
smell by _______
wafting
always _______________ after each lab
wash your hands
keep all electrical cords, wires, and appliances away from _____
water
