Mass, Volume, Weight

• Mass is the amount of matter that makes up an object or substance
• Volume is the amount of space an object or substance takes up
• Weight is the force of gravity acting on the object
• A litre of liquid would fill a container 10cm x 10cm x 10cm, so 1L = 1000cm³ and 1mL = 1cm³
• Volume = length x width x height
• You can find the volume of an irregularly shaped object by displacement

  • Place a container under the spout (of an overflow can)
  • Fill the can until it begins to overflow
  • Wait until the flowing stops
  • Dispose of the water in the container and carefully place the container back under the spout
  • Slowly put the object into the can
  • Collect and measure the volume of the displaced water