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Notes: 23.5
• OBJECTIVES: Students will be able to (SWBAT)
1. Define monomer and polymers
2. Identify repeating patterns in polymers
• 3 Lecture Q’s (2 Reading Q’s)
• 5-sentence summary
Polymers
• Polymers (poly- meaning “many”) are LARGE
molecular structures made from smaller
MONOMERS (mono- meaning “one”) in a repeating
pattern
• Carbon (C) is the most common atom for making
polymers because it is tetravalent, meaning it can
bond to 4 other atoms (or make 4 bonds)
Polymers
Polymers
Repeating Units of Monomers
( )Parentheses ( ) are put around
repeating units � monomers.
POLYVINYL ALCOHOL
VINYL ALCOHOL
( )
Find the
repeating
pattern
(monomer).
Polymers in Elmer’s Glue
• Polyvinyl alcohol • Polyvinyl acetate
Polymers
• PVC (polyvinyl chloride):
type of plastic used in
pipes, food wrap, hoses,
etc.
• Starch: repeating pattern
of glucose (simple sugar)
molecules
Polymer Characteristics
• Polymers tend to have a thick, pliable,
moldable structure (like plastic, rubber, liquid,
or jelly-like texture)
Biological Molecules are Polymers
MOLECULECOMMON
ELEMENTSMONOMER POLYMER
Carbohydrates C, H, O monosaccharide polysaccharide
Lipids C, Hglycerol, fatty
acids, steroidsno real polymers
Proteins C, H, O, N amino acid polypeptide
Nucleic Acid C, H, O, N, P nucleotide DNA, RNA
Biological Polymers: Carbohydrates
• Carbohydrates = Repeating C’s and H’s and O’s
– Monomers: MONOSACCHARIDES (simple sugars like
glucose)
– Polymers: POLYSACCHARIDES (starch, cellulose)
Biological Polymers: Lipids
• Lipids: lot’s of C’s and H’s
– Fat molecules: glycerol connected to 3 long fatty
acid chains
Biological Polymers: DNA
• DNA – nucleic acid
– Monomer: NUCLEOTIDE
– Polymer: DNA, RNA
Biological Polymers: Proteins
• Protein
– Monomers: AMINO ACIDS
– Polymers: POLYPEPTIDES, PROTEINS
Forming Polymers from Polymers
• Binding agents can combine polymers to form
even larger polymers
Hemoglobin: Polymer of Polypeptides