In the science lab how do you gain knowledge?
reading books
discussing theories
doing things
watching the teacher
what must you do if you have an accident?
don't tell anyone
notify the teacher
scream and run away
clean it up yourself
to be safe in the science classroom you must
pay attention
follow the rules
use common sense
all of these
Rules in the lab are designed to protect your
friendships
privacy
skin and eyes
Always use this size container when you are pouring chemicals:
large
small
medium
doesn't matter
When you are reading the chemical bottles you must note the following information:
name
concentration
hazard warnings
The proper method for mixing acid and water is to
acid to water
water to acid
it doesn't matter
What is the safest way to smell a chemical
smell it directly by putting your nose over it
inhale deeply to determine what it is
waft the smell to your nose using your hand
When pouring chemicals:
use a work tray
keep your hand on the label area
immediately stopper chemicals
Harmful volatile chemicals which release fumes should be stored in:
on the lab table
a fume hood
in a closed area
none of these
When using chemicals
recycle unused chemicals
use clean glassware
only pour out, never in
At the end of every lab activity you must first
relax
write up the lab
clean equipment and hands
remove your safety glasses
Never heat the following using an open flame
acids
volatile chemicals
water
metals
What controls the flow of gas on the Bunsen Burner?
air inlets
wing tip spreader
rubber tubing
valve
when lighting a Bunsen Burner with a match or lighter
light the match first and then turn on the gas
turn on the gas before you light the match
What controls the amount of oxygen flow into the Bunsen Burner
What colour would an ideal flame have
transparent
blue
orange-red
yellow
If the flame sputters or goes out, you should first
relight it immediately
turn off the gas
We check all glassware before heating it for cracks or stars to prevent it from
leaking
bursting or exploding
glowing
Why is it not safe to heat a sealed container?
the cork could blow out
the container could burst/explode
it could burst into flames
Which method can be used to heat a test tube?
in a water bath
never heat a test tube
moving it back and forth through a flame
both a) and c)
What two substances look the same whether they are hot or cold?
metals and glassware
liquids and chemicals
metals and gases
liquids and glassware
The two types of thermometers used in a science classroom are:
mercury and bromine
alcohol and mercury
alcohol and bromine
alcohol and water
which rule is true for thermometer use?
shake it down to get a good reading
you may clean up a broken thermometer
keep it on a wire screen when not in use
leave it on the edge of the table for quick use
The most common causes of injury in a science classroom are
burns
cuts from glass
inhalation of fumes
you must never attempt to
snap a glass tube in half
insert one end into a hole of a rubber stopper
seal one end by melting the glass
all of the above
Centrifuges separate
solids from gases
solids from liquids
liquids from gases
what can happen if a centrifuge is not evenly balanced?
explodes
short circuits
vibrates violently
spins faster
which of the following must be worn in a science classroom?
lab coat
school uniform
loose sleeves
closed leather shoes
both a) and d)
what should you do with long hair?
wear a cap
tie it up
nothing
why is it important to remove rings, watches and contact lenses if you are going to work with chemicals?
chemicals may become trapped against the skin
they can become damaged
they can react with the chemicals you are using
How should you protect your eyes from chemicals and glass shards?
blink often
open the windows
wear safety goggles
be careful
how should you protect your hands when pouring chemicals? Use:
hot mitts
safety goggles
gloves
tongs
The first and most important rule is:
put yourself first
no fooling around in the science classroom
read your procedure once the lab has started
run to get your chemicals
where should personal belongings be kept during a lab activity?
in the hallway
in your desk or cupboards
on lab table
in the aisles
When measuring a substance in a burette or graduated cylinder, your eyes should be
below the meniscus level
the same level as the meniscus
above the meniscus level
Why is it important that you never bring in food, drinks or makeup into the science classroom?
your skin, eyes or mouth could develop a rash or burn
some chemicals are poisonous or cancer causing
If a chemical gets in your eyes you must
ignore it, your tears will remove it
wash it out for 5 minutes
wash it out for15 minutes
spray a chemical to neutralize the reaction
if a fire starts in a small container you should
use a fire extinguisher
cover it
evacuate from the building
If a person's clothing catches fire they should
get the safety blanket
run around to get help
stop, drop and roll
go to the eye wash fountain
