sci 2

• States/phases of matter


  • Solid
  • Liquid
  • Gas
  • Plasma
  • Bose-Einstein Condensate
• Properties of matter


  • Shape shows how attracted the particles are with each other
  • Compressibility describes how much the particles in an object can be pressed or squeezed together
  • Diffusibility describes how much the particles in an object can be moved farther away from each other
  • Boiling point is the temperature at which a substance changes from liquid to solid
  • Melting point is the temperature at which a substance changes from solid to liquid
• Physical change


  1. Change in temperature or pressure can physically transform a substance

  2. Phase transition, a physical change where the substance undergoes changes without changing its chemical composition
• Physical properties


  Properties that can be measured and observed without changing the material's chemical composition
• Physical properties of matter

  • Appearance
  • Color
  • Texture
  • Odor
  • Melting point
  • Boiling point
  • Solubility
  • Density
• Phase changes in matter

  1. Sublimation

  2. Freezing

  3. Deposition

  4. Melting

  5. Evaporation

  6. Condensation
• Chemical change


  A change in the appearance of matter and its composition and there is a new substance being formed
• Chemical change


  • Tearing and burning paper
  • Heating coconut milk until it becomes brown syrup
  • Subliming of dry ice at room temperature
  • Cutting of magnesium ribbon
  • Corrosion of iron
  • Ripening of papaya
  • Water driving turbines produces electric power
  • Curdling of milk when vinegar is added
  • Charging of cellular phone battery
  • Making hard-boiled egg
  • Hammering a piece of metal