Materials-density

• What allows more mass to fit into the same volume in steel compared to wood?

  The closer arrangement of its atoms
• How does density relate to the size and weight of objects?

  It measures how much stuff is in a space
• What are the steps to calculate density using the formula?

  1. Identify the mass (m) and volume (V).
  2. Divide the mass by the volume.
  3. Ensure units are consistent (usually $kg / m^{3}$).
• What is density defined as?

  Mass per unit volume
• What is the unit of density?

  kilograms per cubic meter
• What does density tell us about a substance?

  How tightly packed a substance is
• What is the significance of using $kg / m^{3}$ for density in scientific contexts?


  It allows for standardized measurements across disciplines
• What is the volume of a wooden block that is 2000 $cm^{3}$ in SI units?


  0.002 $m^{3}$
• Why is it important to use consistent units when calculating density?

  To ensure accurate and standardized comparisons
• What is the density of an object that weighs 30 kg and occupies 5 $m^{3}$?


  $6 kg / m^{3}$
• If a tiny rock feels heavy and a big sponge feels light, what can we infer about their densities?

  The rock is more dense than the sponge
• What does a density of $2 kg/m^{3}$ indicate about the mass and volume of an object?


  It shows 2 kg of mass per cubic meter
• How do you calculate the density of the wooden block with mass 1.2 kg and volume 0.002 $m^{3}$?


  $ρ =$$600 kg / m^{3}$
• What does $V$ represent in the density formula?


  Volume
• If a box has a mass of 10 kg and a volume of 5 m³, what is its density?

  $2 kg/m^{3}$
• What does the unit $kg / m^{3}$ represent?


  Mass in kilograms per cubic meter of volume
• How is density calculated?

  Density equals mass divided by volume
• What does density help us determine about an object?

  Whether it is heavy or light for its size
• If a material has a density of $3 kg / m^{3}$, how much mass is in $1 m^{3}$?


  3 kg
• If a substance has mass $m =$$15kg$ and volume $V =$$3m^{3}$, what is its density?


  $5kg / m^{3}$
• What is a common alternative unit for density?

  grams per cubic centimeter
• What does $m$ represent in the density formula?


  Mass
• Why is it important to convert to standard units when calculating density?

  • Ensures accuracy in calculations
  • Allows for consistent comparisons
  • Standard units are universally recognized
• If a wooden block has a mass of 1200g, what is its mass in kilograms?

  1.2 kg
• What does $\rho$ represent in the density formula?


  Density
• How should you convert density from g/cm³ to $kg / m^{3}$?


  Multiply by 1000
• What is the density formula?

  $\rho =$$\frac{m}{V}$
• Why do materials have different densities?

  Atoms are arranged differently in each material
• Why is steel denser than wood?

  Its atoms are closer together