Density

• Density


  The mass of an object divided by the volume (D = m/v = g/cm³)
• Mass


  The amount of matter in an object
• Volume


  The amount of space something takes up
• Density increases


  As the particles become more tightly packed
• Archimedes' principle


  1. Place an object in water

  2. The volume of the water displaced out of the container is equal to the volume of the object
• An object will float if it is less dense than the liquid it is placed in
• An object will sink if it is more dense than the liquid it is placed in
• To float


  To move or hover slowly and lightly in air or on the surface of a liquid
• A solid will float on a liquid if it has a lower density than that liquid
• A liquid will float on top of another liquid if it has a lower density than that liquid
• Ice floats in water because water expands when it freezes
• Volume formula


  Length (L) x Width (W) x Height (H)
• How to measure density

  1. Completely fill an overflow can with water

  2. Add irregular object to the overflow can

  3. Collect and measure the water displaced using a graduated cylinder