Lab Safety Contract 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 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.

SAFETY SYMBOLS …will appear when they must be observed.

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  Flask 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

 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 Holder-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.