CARBON BASED MOLECULESDAY14

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DO NOW‣ How does water’s polarity explain its

properties?

‣ How does hydrogen bonding explain water’s properties?

‣ (You have 10 min to finish the stations)

AGENDA‣ Water stations

‣ Water properties

‣ Carbon-based molecules

‣ Summary

MORE ON WATER… (PAGE 25)

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HIGH HEAT OF VAPORIZATION ‣ Due to its high specific heat, water must

absorb A LOT of energy before it can evaporate

‣ i.e. evaporative cooling

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ICE EXPANDS‣When water freezes, it expands

‣ This lowers its density, allowing water to float

WATER STATIONS DEBRIEF1. Cohesion

2. Surface tension

3. High heat of vaporization

4. Universal solvent

5. Density

6. Adhesion

7. Polarity

SUMMARY Write a paragraph addressing the following:

‣ What are 3 things you discovered about water?

‣ How do the characteristics of water help the body?

‣ Why do you think people become serious ill, or die, if they go without liquid for a week or so?

CARBON-BASED MOLECULES

PAGE 27 (CORNEL NOTES TITLE)

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MONOMER‣ Single molecular subunit

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POLYMER‣ Chain of monomers bonded together

‣ aka macromolecule

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MACROMOLECULES‣ Large, carbon-based molecules

‣ Carbohydrates

‣ Lipids

‣ Proteins

‣ Nucleic Acids

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CARBOHYDRATES‣ Monomer: monosaccharide, simple sugar

‣ Polymer: polysaccharide

‣ Simple sugars like glucose (C6H12O6) can be bonded to make polysaccharides

‣ Starches, glycogen, cellulose

PAGE 27LIPIDS‣ Nonpolar molecules

‣ Fats, oils, phospholipids, and cholesterol

‣ Source of energy (fats and oils)

‣ Used for cellular structure (phospholipid and cholesterol)

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PROTEINS‣Monomer: amino acids

‣ Polymer: polypeptide

‣ Perform many functions in the body

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NUCLEIC ACIDS‣Monomer: nucleotides

‣ Polymer: nucleic acid

‣ DNA and RNA

‣ Codes information to make proteins

ILLUSTRATIVE SUMMARY (PAGE 26)ALL CONCEPTS COVERED TODAY 4 COLORS MINIMUM

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