Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.



By Katherine, Emily, and Joseph

Joseph Hirst

on 28 April 2010

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Biochemistry

Biochemistry Katherine, Emily, Joseph Carbon, Hydrogen, Oxygen, Nitrogen are the essential elements needed to make up 96% of all matter

Types of Bonds:

Covalent: electrons are shared by two atoms
Nonpolar: electrons are shared equally and have same electronegativity (tendency to attract electrons in a bond)
Polar: one atom has greater electronegativity and there is an unequal sharing of electrons (distribution of charge)

Ionic: two atoms attract valence electrons
Chapter 2 Hydrogen Bonds: weak that form between positively charged hydrogen atom of one molecule and negative oxygen of another molecule

Van de Waals: very weak; result of distribution of electrons within a molecule; contribute to 3D shapes of large molecules
Water is made up of two hydrogen atoms and one oxygen atom (H2O)
Water Molecules are polar, meaning the oxygen end has a slightly negative charge, and the hydrogen end would have a slightly positive end
Hydrogen bonds form between water molecules.
Water can form up to four hydrogen bonds at a time

CHapter 3
Cohesion- Linkage of like molecules (Water bonds to water)
Adhesion- clinging of one substance to another
Transpiration- Evaporation of water through stomata's in leaves
High Specific Heat- Amount of heat required to raise or lower temperature by 1 degree Celsius.
High specific heat of water keeps temperature of the oceans livable.
Insulation of bodies of water by floating ice-
Frozen water is less dense than its liquid state, causing it to float.
Water is a universal solvent-
Hydrophilic substances are water-soluble.
Hydrophobic substances are non water-soluble.

pH scale-
Acids- excess H+ ions and pH below 7.0
Bases- excess OH- ions and pH above 7.0

Four emergent properties of water:
Full transcript