notes 7-3. forming polymers polymers form when chemical bonds link large numbers of monomers in a...
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Natural Polymers Proteins (monomer = Amino acids) – Examples: proteins carry O 2 in blood, hair, nails, proteins in snake venom Carbohydrates (monomer = sugar) – Starches, cellulose DNA (monomer = nucleotides) Spider webs Silk WoolTRANSCRIPT
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Notes 7-3
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Forming Polymers
• Polymers form when chemical bonds link large numbers of monomers in a repeating pattern.
Monomers are the building blocks of polymers.
Mono = OnePoly = Many
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Natural Polymers
• Proteins (monomer = Amino acids)– Examples: proteins carry O2 in blood, hair, nails,
proteins in snake venom• Carbohydrates (monomer = sugar)– Starches, cellulose
• DNA (monomer = nucleotides)• Spider webs• Silk• Wool
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Synthetic Polymers
• Man-made• Plastics• Many types of clothing• Carpet• Gum• Toothpaste• Styrofoam• Nylon
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Composites
• Combines 2 or more substances in a new material with different properties
• Often involves one or more polymers• Example: Wood is a composite of 2 polymers,
cellulose and lignin• Example: Ancient bricks were composites of
straw and mud