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 liquid Simple 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