Experimental Techniques

• Variable: Time

  Unit: Min/sec

  Apparatus: Stopwatch
• Variable: Temperature

  Unit: Degrees C

  Apparatus: Thermometer [liquid in glass, thermistor or thermocouple]
• Variable: Mass

  Unit: Grams

  Apparatus: Balance
• Measuring volumes in liquids:

  • Measuring cylinder: most approximate
  • Pippette [Fixed volume]: Somewhat accurate
  • Burrettes [Variable Volume]: Most accurate
• A calibrated gas syringe is used to gradually measure the volume of gases