chemistry

• metal hydroxide + acid

  metal salt + water
• metal oxide + acid 


  metal salt + water
• metal carbonate + acid

  metal salt + water + carbon dioxide
• activation energy 


  the minimum amount of energy needed for a chemical reaction to occur
• electrolyte


  liquid that conducts electricity
• transition metals:

  • form coloured compounds
  • high density
  • stronger
  • harder
  • high melting point
  • less reactive than group 1
• group 1 elements:

  • form white compounds
  • soft (can be cut with a knife)
  • very reactive
• metal + oxygen


  metal oxide
• metal + chlorine 


  metal chloride
• metal + water 


  metal hydroxide + hydrogen
• isotope 


  atoms of the same element that have the same number of protons but a different number of neutrons
• element


  substance that contains only one type of atom