Conservation Science Tutorials: Teas Charts Flashcards
Bonds not usually affected by Solvents
Describe Solvents
What are Van der Walls Forces
Describe London Dispersion Forces
Despite the fact that these forces are small and transient there are millions of them present. They are the main bonds holding polythene together.
Van der Waals Forces (3)
D___ Forces
K_____ Interactions
Hydrogen Bonding
Describe Electronegativity
Diagram of the Periodic Table and Electronegativity
- Molecules that have either a permanent or transient dipole have inter-molecular forces that are important for solvent action.
True
False
True
- The following type of bond is most affected by solvents:
Metallic bonds
Covalent bonds
Bonds involving Van der Waals forces
Van der Waals
- In conservation work, the solvent used to remove stains or soften adhesives is always used in great excess to ensure complete removal.
True
False
False
Describe the three properties described by a Teas chart
Diagram showing how to calculate fractional perameters in a teas chart, and the sum of all 3
Diagram of a Teas Chart
Example Fractional Solubility Parameters
Effect of Functional Group on Teas chart