Term
| 4 reasons water is so important |
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Definition
1. Solvent
2. Involved in chemical reactions
3. Physical property of water determine shape of biological molecules
4. Water is oxidized in photosynthesis |
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Term
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Definition
| Separation in electric charge in a molecule causing it to have an electric dipole |
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Term
| What must you consider when determining polarity of a molecule? |
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Definition
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Term
| Types of inter-molecular forces |
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Definition
Dispersion
Ion-dipole
Dipole-dipole
Hydrogen-bonding |
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Term
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Definition
Non-significant
All molecules undergo this
Based on MW and shape |
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Term
| Ion-dipole: How do ions dissolve in water? |
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Definition
| Hydration shells surround ions in water |
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Term
| Ion-dipoles and dipole-dipoles help ionic and polar compounds do what? |
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Definition
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Term
| What is required for the formation of a Hydrogen-Bond? |
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Definition
| A donor (O-H or N-H) and an acceptor (O or N) |
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Term
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Definition
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Term
Hydrophyllic:
Definition
What type of substances dissolve in water?
What are the predominant IMF present? |
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Definition
Water loving
Polar substances dissolve in water
Ion_dipole, dipole-dipole and H-bonding |
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Term
Hydrophobic:
Definition
Do nonpolar substances dissolve? |
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Definition
Water fearing
Nonpolar substances don't dissolve |
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Term
| Key factors in protein folding |
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Definition
Hydrophyllic and hydrophobic interactions.
H-bond network of water reorganizes to accommodate the nonpolar solute. Reduce surface area |
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Term
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Definition
Both polar and nonpolar in character.
Interaction between nonpolar molecules is very weak called van der Walls interactions |
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Term
| What happens when water interacts with amphiphilic molecules |
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Definition
| water tends to hydrate the hydrophillic portion and exclude the hydrophobic portion, leading to the aggregation of the amphiphiles |
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Term
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Definition
1. Boiling Point (soln have higher bp)
2. Freezing Point (soln have lower fp)
3. Vapor Pressure (soln have lower vp)
4. Osmotic Pressure |
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Term
| Osmotic lysis is a gentle method of breaking open animal cells to free intracellular proteins. in this technique, cells are suspended in a solution |
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Definition
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