Lab Apparatus

• What is the primary use of a beaker in the laboratory?

  To store, mix, and heat liquids
• What is the advantage of using an Erlenmeyer flask?

  Its wider bottom allows for quicker heating due to greater surface area
• What is the shape of a volumetric flask?

  Flat bottomed bulb with a long neck
• What is the purpose of a graduated cylinder?

  To measure volumes of liquids accurately
• What is the function of a burette in the laboratory?

  To deliver a chemical solution with known concentration
• What is a pipet used for?

  To transfer small amounts of liquids
• How does a medicine dropper function?

  It transfers small quantities of liquids using a glass tube and rubber bulb
• What is the purpose of an aspirator?


  To suction liquid to be measured
• What is the function of glass tubing in the laboratory?

  To serve as a delivery tube in the generation of gases
• What is the use of a funnel in laboratory procedures?

  To transfer liquid without spillage and to hold filter paper during filtration
• What is an evaporating dish used for?

  To hold small amounts of substances that need heating for evaporation
• What is the purpose of a watch glass?

  To hold small amounts of solid and as a cover for beakers or evaporating dishes
• What does a thermometer measure?

  Temperature during heating
• What are the calibration points of a thermometer?

  100°C (boiling point), 0°C (freezing point), and 300°C (melting point)
• What is the function of a condenser in the laboratory?

  Used in the distillation process and reflux
• What is a glass stirring rod used for?

  To mix chemicals and liquids
• What is the purpose of a mortar and pestle?

  To grind solids into fine powders
• What is the primary use of a Bunsen burner?

  As a source of heat in the laboratory
• What is the function of a tripod in the laboratory?

  To support glassware during heating
• What does wire gauze provide in laboratory setups?

  A stand for a beaker or glassware when placed on an iron ring
• What is the purpose of a pycnometer?

  To measure density and specific gravity
• What is the Mohr Westphal balance used for?

  For measuring the density and specific gravity of liquids
• What does a hydrometer measure?

  The relative density of liquids
• How does a hydrometer work?

  It floats higher in a liquid of higher density due to buoyant force
• What is the function of a pH meter?

  To measure the acidity and basicity of solutions
• What is the purpose of a triple beam balance?

  To determine the weight of substances
• What is an analytical balance used for?

  To measure small amounts of substances ranging from 0.1 mg to 120 g
• Why does an analytical balance require electricity or battery power?

  Because it is a highly sensitive instrument
• What is the process of distillation and its principle?

  • Process used to separate the solvent from a solution
  • Principle: Different boiling points of components in a miscible liquid mixture allow for separation by evaporation and condensation
• What apparatuses are used in distillation?

  • Distilling flask
  • Condenser
  • Wire Gauze
  • Tripod
  • Erlenmeyer Flask
  • Clamp Stand
• What is titration and how does it work?

  • Process for determining the concentration of a dissolved substance
  • Ends when the analyte is completely consumed by the reagent, known as the equivalence point
• What is the process of filtration?

  • Separates solid particles from a liquid
  • Used when particles do not easily settle
• What is the heating process in the laboratory?

  • Subjecting a substance to heat
  • Causes boiling or conversion of solid to another compound
• What is the principle of a conductivity set-up?

  • Device using a bulb to indicate how well a solution conducts electricity
  • Principle: Electric current is a flow of electrical charge carried by electrons in metal or ions in solutions