Attractions & Reactions

• all living things have atoms

  • basis of the physical world

• Arrangements of atoms is determined by there attraction + interaction

• Living things are made of 4 element → 96% of us are made by them

  • Carbon

  • Hydrogen

  • Oxygen

  • Nitrogen

• Salt + Calcium (Sodium and chlorine and calcium) → run our nervous system

• Iron → blood → binds oxygen

  • get from red meat & dark green veg.

  Oxygen → 2 bonds

  Carbon → 4 bonds

  Nitrogen → 3 bonds

  Hydrogen →1 bond

Lone pair → give something a little extra attraction

ex: oxygen and nitrogen

Hydrogen ions

• when hydrogen looses it’s electron it becomes an H+ ion → sole proton

  • ready to attract → highly attracted to electron lone pair

Ions → make points of attractions → atoms that have lost or gained electrons

Forces

• polar compounds → each atom is slightly attraction

  • difference in EN greater than .5

    • C - O

    • O - H

    • N - H

      • polar bonds

• Hydrogen bonding → happens when H is bonded to O, Nor F near another O, N, F

  • H - O group

  • H - N group

• London forces → the bigger the more attractive

  • attraction between electron of one atom and the nucleus of a neighboring atom

    • MR. STEAL YOUR GIRL

Reactions

• Dehydration Synthesis → removal of water

  • a hydroxyl or carboxyl group is present

• Hydrolysis → the adding of water to break something down

• Redox Reaction →moving of energy - H+ adds charge = increase in energy

  • + or - hydrogen or Oxygen