POLYMERS What is a polymer A polymer is

What is a polymer? A polymer is a large molecule (a macromolecule) made up

The word “poly” comes from the Greek word “many” and “mer” means “parts”. All

Example: monomer + monomer + monomer = polymer Joining monomers to form polymers is

Reversed Example: polymer = monomer + monomer + monomer Breaking down polymers into their

Polymer Arrangements: Linear Polymers Branched Polymers Cross-linked Polymers

Examples of Polymers: Natural Polymers – nucleic acids, proteins, carbohydrates, lipids Manufactured Polymers -

Natural Polymers Nucleic Acid (DNA/RNA) Monomer (repeating units) nucleotide Proteins amino acid Polysaccharides (Carbohydrate)

Manufactured Polymers Linear (sturdy & rigid) Branched (flexible) Cross-linked (more cross-links=more rigid) Examples Teflon,

Lets Sum It Up! What are polymers? Large molecules made up of many smaller

Separate the molecule to show two identical monomers.

Circle the repeating units of this polymer.

Newspaper Activity: Take a piece of newspaper and try tearing it. Rotate the piece

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POLYMERS

What is a polymer? A polymer is a large molecule (a macromolecule) made up of many smaller repeating units.

The word “poly” comes from the Greek word “many” and “mer” means “parts”. All polymers are made of small repeating molecules called monomers. What do you think “mono” means? mer? one part

Example: monomer + monomer + monomer = polymer Joining monomers to form polymers is done through a chemical reaction known as dehydration synthesis. In reality, the number of monomer units in a polymer commonly ranges from 1, 000 to 10, 000 or more.

Reversed Example: polymer = monomer + monomer + monomer Breaking down polymers into their individual monomers is done through a chemical reaction known as hydrolysis.

Polymer Arrangements: Linear Polymers Branched Polymers Cross-linked Polymers

Examples of Polymers: Natural Polymers – nucleic acids, proteins, carbohydrates, lipids Manufactured Polymers - plastics, nylon, rubber, styrofoam, erasers Some examples of things that are not polymers are metal, water, glass.

Natural Polymers Nucleic Acid (DNA/RNA) Monomer (repeating units) nucleotide Proteins amino acid Polysaccharides (Carbohydrate) Lipid monosaccharide glycerol & fatty acids

Manufactured Polymers Linear (sturdy & rigid) Branched (flexible) Cross-linked (more cross-links=more rigid) Examples Teflon, soft-drink bottles, milk containers, garden hoses Plastic food wrap, sandwich bags, ketchup squeeze bottles Bottle caps, car tires, bowling balls,

Lets Sum It Up! What are polymers? Large molecules made up of many smaller molecules. monomers Polymers are made from _____. How are polymers formed? Through a dehydration synthesis process called _______. How are polymers broken apart? Through a process called hydrolysis _____.

Separate the molecule to show two identical monomers.

Circle the repeating units of this polymer.

Newspaper Activity: Take a piece of newspaper and try tearing it. Rotate the piece of paper 90 degrees and tear it the other way. Did you notice a difference between the tears? Why? ? ?