1. Macromolecules/ Properties of water
By: Mahek, Angela, & Chino

2. Definitions:
Covalent bond- chemical bond formed when two atoms share one or more pairs of electrons.
Ionic bond- forms through the electrical force between oppositely charged ions.
Hydrogen bond- Attraction between a slightly positive hydrogen atom and a slightly negative atom.
Valence electrons- electrons on the outer shell of an atom.

3. Definitions cont.:
Cohesion: Attraction between molecules of the same substance.
Adhesion: Attraction molecules of different substances.
Polar molecule: Molecule that is positive and negative. (Think of a magnet)
Amino Acid- Molecule that makes up proteins. Composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.

4. Monosaccharide: simplest carbohydrates and are often called single sugars.
Polysaccharide: polymers of monosaccharides.
Glycerol: Includes fat and oils and is bonded to molecules called fatty acids.
Fatty acids- Chains of carbon atoms bonded to hydrogens atoms.

5. Nucleotide: Monomer that forms DNA and has a phosphate group, a sugar, and a nitrogen containing base.
Polypeptide: Chains of amino acids. Proteins are made up of one or more polypeptide molecules.
Catalyst: Substance that decreases activation energy and increases reaction rate in a chemical reaction.
Activation Energy: Energy input necessary to initiate a chemical reaction.

6. Video Watch a fantastic video:
h?v=HVT3Y3_gHGg

7. How to remember Bonds:
Challenge: Draw a covalent Bond and an ionic bond.

8. Challenge: Show what valence electrons are.

9. See Chinos performance on Cohesion & Adhesion.
What is consisted of glycerol that are bonded to molecules called fatty acids?
- Fats and Oils

10. Draw a polymer and label a monomer.
Mahek draws a beautiful image of the answer.
Trick: Poly- many Mono-one