elements

• | elements

  • atoms with the same ATOMIC NUMBER
  • if substance only has atoms with same numbers of PROTONS, it’s an element
• whats an element?

  atoms with the same atomic number (protons)
• whats an atomic mass?

  number of protons
• | isotopes

  • different forms of ELEMENTS has extra NEUTRONS
  • same atomic, different mass
  • RAM is used when referring to element
  • AVERAGE mass of different abundances
  • RAM= sum of (isotope abundance x mass number) / sum of abundance of all isotopes