September 19, 2014 Lab Equipment Notes September 19, 2014 Lab Equipment: Glassware • Beakers are used to hold liquids. • Can be used to heat liquids at relatively low temperatures. • Erlenmeyer flasks are used to hold liquids. • Sloped sides = ideal for swirling mixtures September 19, 2014 Lab Equipment • Crucibles are used to heat solids at high temperatures. September 19, 2014 Lab Equipment: Pick up tools • Beaker tongs pick up hot beakers. • Crucible tongs pick up hot crucibles. • Test tube clamps pick up hot test tubes. September 19, 2014 Lab Equipment: Measuring volume • Graduated cylinders accurately measure liquid volumes. • Always read from the bottom of the meniscus September 19, 2014 Lab Equipment: Measuring mass • Electronic balance measures mass to .001 g. • Record ALL of the digits and the units • Make sure to tare the balance before use. September 19, 2014 Lab Equipment: Heating tools • Bunsen burner is a high temperature heat source. • Connect to gas and use a striker to light. • Hot plate is used to heat at low temperatures. • It still gets HOT--use caution. • Temperature probe measures temperatures! • Read temperature on digital screen. September 19, 2014 Lab Equipment: Small volumes • Test tubes hold small volumes of liquids. • Easy to observe contents. • Test tubes go in a test tube rack or if hot, in a beaker. • Pipette is used to transfer small volumes of liquids. September 19, 2014 Lab Equipment: Evaporation • Watch glass is used to slowly evaporate liquids. • Evaporating dish are used to evaporate or heat liquids or solids at low temperatures. September 19, 2014 Lab Equipment: Miscellaneous • Rubber stoppers close off test tubes and flasks. • Some have holes for tubing. • Scoopula is used to transfer solids • Stirring rod is used for stirring. September 19, 2014 Lab Equipment: Miscellaneous • Funnel is used to transfer liquids from one container to another. • Can also be used with a filter to remove solids. • Goggles protect your eyes from solid and liquids from getting into your eye. • Should always be worn when working with chemicals, heat, or anything potentially dangerous. • Protects your EYES not your forehead. September 19, 2014 Lab Equipment: Miscellaneous • Water bottle is used to rinse out glassware. Not a toy. • Only fill with distilled water. September 19, 2014.