Water Flashcards

1
Q

Dipole Moment

A

Determined by the magnitude of the charges and the distance between them

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2
Q

Hydrogen Bonding

A

The electrostatic attraction between a hydrogen atom in one polar molecule (as in water) and a small electronegative atom (as in oxygen)

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3
Q

Hydrophilic Interactions

A

Charged and polar
Water can disrupt hydrogen bonds between sucrose molecules
Break into small pieces of the same molecule and not into ions

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4
Q

Hydrophobic Interactions

A

Uncharged and nonpolar
No free charge because the electrons are being shared equally

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5
Q

Amphipathic

A

Regions of both hydrophobic and hydrophilic

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6
Q

Amphipathic Interactions

A

The polar region forms hydrogen bonds with water while the nonpolar regions interact with each other

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7
Q

Structure of Triglycerides (Fats)

A

Glycerol (alcohol group), Ketone (fatty acid), Triglyceride (neutral fat), 3 water molecules

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8
Q

Surface Tension

A

Kinetic energy causes the water molecules to be in constant random motion
The air-water interface experiences sideward and downward intermolecular forces
Hydrogen bonds between H2O molecules form a lattice of water molecules which creates high surface tension

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9
Q

Why does ice float on the surface?

A

Less density with much more distance than in liquid therefore less kinetic energy

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10
Q

Diffusion

A

Molecules or ions in solution go from regions of higher to regions of lower concentration

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11
Q

Osmosis

A

The process of water moving from a region of higher to lower concentration through a selectively water-permeable membrane

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12
Q

Ion Diffusion via Channels

A

Ions and water molecules are bouncing in random directions due to thermal kinetic energy

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