Week 1 in Review
Building Blocks of Life
Water
Week 2: Chapter 4—Carbon
The proton, electron and neutron create the building blocks of an organized molecule.Proton = IdentityNeutrons = IsotopesElectrons = Reactivity, Bonding
Basic Organization is the molecule which has:Intramolecular Bonds: Covalent, IonicIntermolecular Bonds: van der Waals,
Hydrogen
The most important elements of life are C, H, O, N, P, SWhich are arranged by inter & intramolecular
forcesIn the presence of water…the building blocks
of life are formed—amino acids.Why is water so important?
Regulates Temperature in organism/environment
Universal Solvent for Metabolic PurposesCohesive/Adhesive Properties for structure and
transportStructure as a solid—”Ice Floats”
Water dissociates into a H+ and – OH ion.Acid is a measurement of H+ in a solution.Base is when more – OH in a solution.Measurement of pH scale. 0-14
Each step has a difference of 10x of H+ ions.Example
pH of 0 has the highest amount of H+ pH of 14 has the lowest amount of H+ The difference between a pH of 0 and 1 is 10x.The difference between a pH of 0 and 2 is 100x (10
x 10)
Buffers regulate pH by adding or removing H+ to the solution.
Can form diverse molecules—4 valence e-
Building Block of DNA, Carbohydrates, Fats, Proteins
Organic = C
Isomer = same molecular formula, different structure = different functions