Laboratory Apparatuses and Measurements Quiz

Laboratory Equipment

• Pipette: used to transfer a measured volume of liquid.
• Iron stand: used to mount iron rings and clamps in an experiment set-up.
• Tripod: a three-legged platform used to support flasks and beakers.
• Mortar and pestle: used to grind up solid chemicals into a fine powder and crush solids into smaller pieces.
• Tongs: used to grip and lift objects instead of holding them directly with hands.
• Spatula: a broad, flat blade used to mix, spread, and transfer solid chemicals.
• Evaporating dish: used for the evaporation of solutions; to separate liquids and solids from a solution.
• Watch glass: a circular convex concave piece of glass used as a surface to evaporate a liquid; to hold solids while being weighed or as a cover for a beaker.
• Erlenmeyer flask (conical flask or titration flask): a flask with a flat bottom, a conical body, and a narrow cylindrical neck.
• Florence flask (boiling flask): a flask with a round body with a long narrow neck and with either a round or a flat bottom.
• Stirring rod: used to mix chemicals and liquids.
• Clay triangle: used to hold crucibles and porcelain dishes heated by a Bunsen burner.
• Test tube: used to contain and test various reactions on a small scale; also known as a culture tube or sample tube.
• Beaker: a cylindrical container with a flat bottom and a small spout to aid pouring.
• Distilling flask: a flask used in distillation to separate mixtures of two liquids with different boiling points.
• Crucible and cover: used to contain chemicals when heated to extremely high temperatures.
• Test tube holder: used for holding a test tube in place when the tube is hot or should not be touched.
• Separatory funnel: used for liquid-liquid extractions, separating a mixture's components into two solvent phases of different densities.
• Separatory funnel adapter: used to connect various glassware items, usually when making various setups, like distillation, refluxing, sublimation, inert gas environment, vacuum, etc.

Temperature Measurement

• Thermometer: used to measure temperature.
• Conversion formula: ℉ = ℃ + 32, ℃ = ℉ − 32, 𝐾 = ℃ + 273.15.

Miscellaneous

• Test tube brush: used for cleaning test tubes.
• Graduated cylinder: a tall, narrow container with a volume scale used especially for measuring volume of liquids.
• Meniscus: a concave meniscus occurs when the molecules of the liquid are more strongly attracted to the container than to each other; a convex meniscus occurs when the molecules of the liquid are more strongly attracted to each other than to the container.
• Funnel: a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening.
• Burette: a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations.