density

• What does density tell you about a substance?

  How much mass is packed into a volume
• What is density a measure of?

  Compactness of a substance
• What are the units of density?

  kg/m³
• How is density calculated?

  Density = mass / volume
• What does a dense material have in terms of its particles?

  Particles packed tightly together
• How does compressing a material affect its density?

  It increases density by decreasing volume
• Which state of matter is generally denser: solids, liquids, or gases?

  Solids
• What are the steps to find the density of a solid object?

  1. Measure mass using a balance
  2. Calculate volume using a formula or displacement
  3. Use density formula: Density = mass / volume
• How do you find the volume of a cube?

  Width × height × length
• What method is used to find the volume of irregular solids?

  Submerging in a eureka can
• What is the relationship between ml and cm³?

  1 ml = 1 cm³
• What are the steps to find the density of a liquid?

  1. Zero the balance with a measuring cylinder
  2. Pour liquid in increments and record mass
  3. Calculate density for each measurement
  4. Average the calculated densities
• If a gemstone displaces 7.0 cm³ of water, what is its volume?

  7.0 cm³
• How do you calculate the density of a gemstone that weighs 5.0 g and displaces 7.0 cm³ of water?

  $\frac{5.0 \text{ g}}{7.0 \text{ cm}^3} =$$0.714 \text{ g/cm}^3$
• What is the significance of density in understanding materials?

  • Indicates how tightly packed particles are
  • Helps differentiate between solids, liquids, and gases
  • Affects buoyancy and material properties