Exp. 1 Measurement

• Glassware

  Beaker

  
• Glassware

  Cylinder

  
• Glassware

  Erlenmeyer flask

  
• Glassware

  Burette

  
• Glassware

  Volumetric flask

  
• Glassware

  Graduated pipette

  
• Glassware

  Volumetric pipette

  
• Glassware

  Pipet filler

  
• Precision and Accuracy

  Not accurate

  Not precise

  
• Precision and Accuracy

  Not Accurate

  But precise

  
• Precision and Accuracy

  Accurate

  Precise

  
• Precision and Accuracy

  Precise

  not Accurate

  
• Precision and Accuracy

  • Accurate
  • Not Precise

  
• Precision and Accuracy

  • Not Accurate
  • Not Precise

  
• Precision: How close to each other
• Accurate: How close to the target
• Precision and Accuracy

  Burette > Cylinder > Beaker
• The density of water is influenced by temperature.
• Unit

  • Density = g/mL
  • Mass of water = g
  • Volume = mL
• When reading the glassware unit read at the lowest point of the meniscus
• A concave meniscus occurs when liquid adheres to the glass surface and forms a curved shape.
• Watch glass

  • For covering beaker
  • To heat the weight small amount of substances
• Beaker is specifically designed for heating and boiling liquids.
• Analytical balance is used for the precise measurement of mass