1. 1.) What are the monomers that make up a polypeptide?
Thursday, 8/31/17
1.) What are the monomers that make up a polypeptide?
2.) What are the 3 components of a nucleotide?
3.) What is the difference between a saturated and an unsaturated fatty acid?
Today: 1.) Review Chapter 1 & 2 quiz concepts
2.) “Vitruvian Man” data collection/graphing lab
Homework: 1.) “Properties of Water” booklet due Fri., 9/1
2.) “Vitruvian Man” packet due by Tues., 9/5

2. Placate (verb) Word of the Day
To calm the anger of; to appease or pacify.
“In order to placate unhappy customers, the department store gave away valuable coupons.”

3. Strong Acids have a pH of 1-3 Produce lots of H+ ions
1. An acidic solution has
A greater concentration of hydroxide ions than hydrogen ions.
A greater concentration of hydrogen ions than hydroxide ions.
Equal concentrations of hydrogen ions and hydroxide ions.
D. Neither hydrogen ions nor hydroxide ions.
Strong Acids have a pH of 1-3
Produce lots of H+ ions

4. 3. Which property of water is responsible for its ease in forming hydrogen bonds with itself?
High surface tension
B. Polarity
C. High heat of vaporization
D. Adhesion
Hydrogen Bonds: Formed between a highly Electronegative atom of a polar molecule and a Hydrogen

5. 6. A general definition for “cohesion” is the attraction of:
Particles of the same substance
Particles of different substances
Particles of both the same and different substances
D. Particles of neither the same nor different substances
Attraction between particles of the same substance ( why water is attracted to itself)

6. 10. Which property of water explains how water seems to “climb” up the walls of a straw?
Cohesion
B. Covalent
C. Adhesion
D. Universal solvent
Adhesion: Attraction between two different substances (water and glass, water and plastic, water and plant tissues, etc).

7. 15. When you charge a balloon by rubbing it on your head and place the balloon near a stream of water, the water moves towards the balloon. Which property of water does this demonstrate?
Water can be cohesive
B. Water can be adhesive
C. Water is denser as a liquid than as a solid
D. Water is polar
Electrons were transferred from hair to balloon, so balloon is now negatively charged