kpt

Cards (8)

  • Solid's key properties:
    • Very strong force of attraction
    • Closely packed and orderly
    • Vibrates at its fixed positions
    • Has very low energy
  • Key points about the properties of liquids:
    • Liquids have strong intermolecular forces
    • Particles in liquids are closely packed and disorderly
    • Particles in liquids can slide over each other
    • Liquids have low energy compared to gases
  • Gas particles are weak, far apart, disorderly, and move at high speeds in all directions
  • When a substance is heated, thermal energy is transferred to its particles
  • Particles vibrate and rotate about their fixed position
  • >Changes in state of matter:
    -temp of solid substance increase till melting point (kinetic energy increases, vibrate in fixed positions)
    -solids starts to melt: forces of attraction overcome by motion of particles, TEMP REMAINS CONSTANT
  • -solids melts completely:temp of liquid increases till b.p, line rise, kinetic energy of particles in liquid increases,particle moves more quickly
  • -temp constant: forces of attraction overcomed by motion of particles, boiling occurs
    -temp reaches gaseous state, kinetic energy in gas increases, particles move more quickly.