Density

• What is density a measure of?

  Mass per unit volume of a substance
• How do you calculate density?

  Mass divided by volume
• What is the symbol for density?

  The Greek letter rho
• In physics, how is density typically measured?

  Kilograms per meter cubed
• What is the density of solid aluminium?

  2,710 kilos per meter cubed
• How much mass does a one meter cube of aluminium have?

  2,710 kilos
• What is another common unit for measuring density?

  Grams per centimeter cubed
• How do you convert grams per centimeter cubed to kilos per meter cubed?

  1 gram per centimeter cubed equals 1,000 kilos per meter cubed
• How do you calculate the volume of 420 kilos of aluminium?

  Divide mass by density
• What is the volume of 420 kilos of aluminium with a density of 2,710 kilos per meter cubed?


  0.155 meters cubed
• What is the first step to calculate density experimentally for solids?

  Find the mass of the object
• How do you find the volume of a regular solid?

  Multiply length, width, and height
• What is the volume of a cuboid with dimensions 4 cm, 3 cm, and 2 cm?

  24 centimeters cubed
• How do you find the volume of an irregular solid?

  Use a eureka can and measuring cylinder
• What happens when you add a solid to a eureka can filled with water?

  Water equal to the solid's volume flows out
• How do you calculate the density of a liquid?

  Divide mass by volume
• What is the first step to measure the density of a liquid?

  Zero the balance with an empty cylinder
• What is the volume of 10 milliliters in cubic centimeters?

  10 centimeters cubed
• Why is measuring a larger volume more accurate?

  It minimizes measurement uncertainty effects
• What can you do to identify anomalies in measurements?

  Take multiple measurements
• What are the steps to find the density of a solid experimentally?

  1. Measure the mass using a balance.
  2. Determine the volume:

  • For regular shapes: multiply length, width, height.
  • For irregular shapes: use a eureka can.

  1. Calculate density: divide mass by volume.
• What are the steps to find the density of a liquid experimentally?

  1. Zero the balance with an empty measuring cylinder.
  2. Pour a known volume of liquid into the cylinder.
  3. Record the mass of the liquid.
  4. Calculate density: divide mass by volume.