1. What do the following equations represent?
Chemical Reactions

2. Chemical Reactions of Life
building molecules
Dehydration Synthesis
breaking down molecules
Hydrolysis + +

3. Chemical Reactions are represented by chemical equations
Chemical Reactions are represented by chemical equations. They are written in the following form:
Reactants Products
(starting material) (newly formed substances)
ex: NaCl Na+ + Cl-
Yields
H2O

4. Parts of a Chemical Equation:

5. How Compounds Are Built And Broken Down
Dehydration Synthesis
and
Hydrolysis

6. Dehydration Synthesis
an organic compound (polymer) is made from smaller molecules (monomers) by removing water
Monomer Monomer Polymer
Reactants Products

7. Dehydration Synthesis
dehydration = removing water synthesis = to build
synthesis of polymer

8. Hydrolysis
an organic compound (polymer) is broken down into smaller molecules (monomers) by the addition of water
Polymer Monomer Monomer
Reactants Products
water

9. hydro = water.......lysis = to break down
Hydrolysis
hydro = water lysis = to break down

10. Dehydration Hydrolysis Synthesis
Removal of Water Addition of Water
Dehydration Hydrolysis
Synthesis

12. Example 1: Dehydration Synthesis
HAPPY FACE MOLECULES
Example 2: Hydrolysis
Example 1: Dehydration Synthesis

13. Example 3: Dehydration Synthesis
Example 4: Hydrolysis

14. Example 5: Dehydration Synthesis
Example 6: Hydrolysis

15. Dehydration Synthesis or Hydrolysis? +

16. + + + +

17. +

18. + + +

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

20. Breaking down polymers into their individual monomers is done through a chemical reaction known as Hydrolysis. polymer = monomer + monomer + monomer + monomer + monomer + monomer

21. Dehydration Synthesis vs. Hydrolysis
water in
water out