Boyle's Law — Pressure & Volume

Investigate how changing pressure affects the volume of a gas. Move the pump handle down to increase the pressure. Press the Release button to reduce the pressure. Use the Graph Builder to plot your results.

Data Table

# Pressure (kPa) Volume (cm³)
  1. Set the pressure to 100 kPa. Read the volume from the graduated tube and record both values.
  2. Pump the pressure up to 200 kPa. Before you read the volume — predict what you think it will be. Then record the actual value. Were you right?
  3. Record at least 6 pressure/volume pairs across the full range of the gauge.
  4. Plot a graph of Pressure against Volume. Draw a best fit curve.
  5. What pattern do you notice between pressure and volume?
  6. What does this pattern tell you about the relationship between pressure and volume?