kwl chart—lab safety what do i know about lab safety? what do i want to know about lab safety?...
TRANSCRIPT
KWL CHART—LAB SAFETY
What do I know about lab safety?
What do I want to know about lab safety?
What have I learned today about lab safety?
Activator—Word Splash
List as many pieces of lab equipment that come to mind when you think of chemistry.
Activator
In your own words, describe 2 of what you think are the most important lab rules to follow.
LAB SAFETY AND
EQUIPMENT IN A
SCIENCE CLASSROOM
Lab Safety Contract—Must be signed before
doing lab!!Contract stating that you agree to
work and behave in a safe manner while doing labs in this
classroom.
Lab Safety Rules
VERY important Must be followed at ALL times Failure to follow these rules will
result in you not being allowed to participate in the exercise and/or a failing grade for the assignment.
Lab Safety Rules Wear safety goggles at ALL times!!!! Learn what to do in case of an accident, for
example, getting an acid in your eyes. Report any and all accidents IMMEDIATELY to
your teacher. Know where fire extinguisher is located and
how to use it. Work in a well-ventilated area. Read directions for an experiment carefully two
or more times.
Lab Safety Rules Use clean lab equipment…NEVER use dirty
equipment. Do not perform experiments until instructed to do
so. NEVER eat or drink in the lab. Do NOT taste any
chemicals. Do NOT smell chemicals directly, you are to waft
the smell to your nose. Clean your work area and materials before leaving
the lab area. ALWAYS wash your hands when you are
finished…this should be the very last thing you do!!
What NOT to do in the Lab…
Mix chemicals “for the fun of it.” Taste, touch or smell any chemical. Heat any chemical that you are not instructed to
do so. Heat a liquid in a closed container. Tilt a test tube towards yourself or anyone else. Perform any experiment that you do not have
written instructions for. Dump chemicals or broken glass into the sink or
the trash can.
LAB SAFETY RULE and FIRST AID HANDOUT
Make sure to carefully read “Lab Safety Rules and First Aid” Handout on Online Classroom.
Activator
Using the online classroom Folder “Introduction to Chemistry”, choose the Lab Safety SYMBOL handout.
Match the safety symbol to the appropriate description.
SAFETY SYMBOLS…will appear when they must be observed.
See online classroom for handout
“Lab Safety Symbols”
Equipment
Beaker-a container, like a cup, with a wide mouth. Used for mixing, measuring and boiling.
Beaker Tongs-used to pick up and hold a beaker.
Equipment
Erlenmeyer Flask-a container used for:Swirling liquidSimple measuring,
heating, storing of mixed liquids
Does not break due to heat or chemicals
Crucible Tongs-used to pick up and hold an Erlenmeyer flask or crucible
Volumetric Flask-used to measure one specific volume; mostly used in mixing solutions.
Equipment Ring Stand-a support for an iron ring or
a test tube clamp
Ring Clamp-fastens to a ring stand as a support for apparatus
Wire Gauze-spreads the heat of a flame
Equipment
Equipment
Scoopula-to transfer small solids
Mortar and Pestle-used to grind chemicals into powder
Equipment
Graduated Cylinder-for accurate measurements of small volumes of liquids that cannot be done with beakers and flasks; used to measure volume by water displacement to calculate density.
Equipment Indicator (pH) papers-used to measure
the pH of liquids; turns/stays pink in acids and blues in bases.
Equipment Test Tube- used to hold, mix, or heat small
quantities of solid or liquid chemicals for experiments.
Test Tube Tongs-used to hold one test tube
Test Tube Brush-to scrub/clean test tubes.
Equipment Test Tube Rack-holds several test tubes
in the upright position
Test Tube Clamp-fastens to a ring stand and holds a test tube.
Equipment Evaporating Dish-a container for
evaporating and heating small amounts of liquid
Watch Glass- clear glass with a concave shape that should never be used for heating. Can be used as a cover for an evaporating dish or beaker or to dissolve materials such as crystals and powders.
Equipment Goggles-to protect eyes when heating or
using glassware or chemicals
Microwell Plate-to observe many, small reactions at one time
Wash Bottle-hold and dispense distilled water
Equipment Stirring Rod-stir combinations of
materials; usually made of glass
Stoppers-used to seal test tubes and other types of glass to keep out airborne contaminants.
Equipment
Funnel-holds filter paper and/or aids in pouring liquids from one container to another.
Filter Paper-used to separate liquids from insoluble liquids. The solid is trapped while the liquid pours through.
Equipment Triple Beam Balance-an
instrument used to measure mass.
Spring Scale-measures mass and force. Unit is Newtons.
Equipment Crucible and Lid-used to heat
chemicals, usually solids; can withstand very high temperatures.
Pipe Stem Triangle-supports crucibles, evaporating dishes or funnels on a ring support when heating to high temperatures.
Equipment
Hot Plate-used to heat objects
Equipment Eyedropper-transfer small amount
of liquid; usually made of glass and rubber.
Pipet-transfer small amounts of liquid; usually made of plastic and is disposable.
Equipment to Add
#7—Florence Flask #21—Bunsen Burner #25—Gas Collecting Tube #26—Thermometer #28—Buret #27--Forceps