Chemistry

Subdecks (9)

Cards (54)

  • Percentage of nitrogen in atmosphere
    78 %
  • As atomic mass increases, melting point, boiling point, and density increase due to stronger forces of attraction
  • Reactivity of non-metals decreases as atomic mass increases

    More shielding - more shells
    Outer shell further away from the nucleus
    Weaker force of attraction between positive nucleus and negative electrons
    Harder to gain electrons to the outer shell
  • Reactivity of metals increases as atomic mass increases

    Easier to lose electrons as they are further away from the positive nucleus - more shielding due to more shells