Science note

• Flexibility

  The ability of a material to bend without breaking, return to its original size and shape after bending
• Hardness


  The ability of a material to withstand scratches
• Melting point


  The temperature at which a material changes state from solid to liquid
• Boiling point


  The temperature at which a material changes state from liquid to gas
• Strength


  The ability of a material to support a heavy load without breaking or tearing
• Physical properties of materials

  • Sight
  • Smell
  • Hearing
  • Taste
  • Touch
• Chemical composition


  The chemical components that make up a substance
• Element


  A substance that cannot be broken down into two or more simpler substances by chemical or physical methods
• Compound


  A substance made up of two or more different elements chemically combined
• Mixture


  Two or more different substances that are mixed, but not chemically combined
• Solute


  The substance that dissolves in a solvent
• Solvent


  The substance that dissolves the solute
• Solution


  The mixture of the solute and the solvent
• Suspension


  A mixture in which insoluble substances are suspended in a liquid or gas
• Solubility


  The ability of a solute to dissolve in a solvent
• Rate of dissolving


  The amount of solute that dissolves in a fixed volume of solvent, given a fixed amount of time