Int Sci 8

• Element


  Contains only one type of atom
• Mixture


  Contains two or more different substances physically combined with no chemical bonds between them
• An Alloy is a mixture of
• Solution


  A dissolved substance (or substances) in a solvent (liquid)
• Soluble


  Able to be dissolved
• Molecules

  A group of atoms chemically bonded together
• Suspension


  A mixture of fine insoluble particles spread throughout a liquid
• Separating a solution


  1. Evaporate off the water

  2. Filtration to separate an insoluble solid from a liquid

  3. Decanting to separate a liquid from an insoluble solid
• Solute


  The substance that is being dissolved
• Solvent


  The substance that is doing the dissolving
• Chromatography


  Separate dissolved solids from a solution
• Fractional distillation


  Used to separate liquids with similar boiling points
• Residue


  A substance that remains after a process such as combustion
• Distillate


  A liquid product condensed from vapour during distillation
• Metals


  • Good conductors of electricity and heat
  • High melting and boiling points
  • Hard, dense, shiny, lustrous, sonorous
• Non-metals


  • Relatively poor conductors of electricity and heat
  • Low melting and boiling points
  • Dull, brittle, low densities
• Ductile


  Able to be drawn into wires
• Malleable


  Able to be hammered or pressed into shapes without breaking
• Sonorous


  Ringing sound
• Thermal pollution


  Abnormal rise in temperature in bodies of water
• Thermal pollution disrupts the delicate balance of atoms and the smallest particles found in atoms are protons and electrons