Staes of Matter

• What are the three states of matter?

  Solids, liquids, and gases
• Why can't you walk through a brick wall?

  Because solids have tightly packed particles that resist movement
• How does moving through water compare to moving through air?

  Moving through water is more resistant than moving through air
• What happens to the volume of most solids when they melt?

  Their volume increases slightly
• Are most liquids denser or less dense than the solids they come from?

  Less dense
• What happens to the steam produced from boiling 5 cm³ of water?

  The steam will fill an average bucket
• What are the learning objectives regarding the states of matter?

  • Understand the arrangement, movement, and energy of particles in solids, liquids, and gases
  • Understand interconversions between states of matter, including names and processes
  • Explain results of experiments on dilution of colored solutions and diffusion of gases
  • Know definitions of terms: solvent, solute, solution, saturated solution
• What is meant by the term 'solvent'?

  A substance that dissolves a solute
• What is meant by the term 'solute'?

  A substance that is dissolved in a solvent
• What is a 'solution'?

  A homogeneous mixture of a solute and a solvent
• What is a 'saturated solution'?

  A solution that cannot dissolve any more solute at a given temperature
• What are the key characteristics of solids, liquids, and gases regarding particle arrangement and movement?

  • Solids: Tightly packed particles, fixed shape, limited movement
  • Liquids: Particles are close but can move freely, take the shape of the container
  • Gases: Particles are far apart, move freely, fill the entire volume of the container