ap bio water and hydorgen bonding Flashcards

1
Q

water has what type of bonds?

A

. polar covalent bonds
. hydrogen bonds

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2
Q

what elements does water have?

A

2 elements of hydrogen and one oxygen

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3
Q

oxygen has what charge?

A

negative

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4
Q

hydrogen has a what charge?

A

partial positive

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5
Q

hydrogen bond:

A

forms btwn positive hydrogen and negative oxygen

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6
Q

what causes polar molecules?

A

uneven distribution

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7
Q

in liquid

A

hydrogen bonds break and reform

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8
Q

in solid/frozen

A

hydrogen bonds are stable, farther apart, less dense ( why ice floats)

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9
Q

cohesion

A

water is attracted to water

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10
Q

cohesion example

A

allowing the water droplets to stick together in a stream to go up the roots

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11
Q

adhesion

A

water attracted to other polar or charged things

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11
Q

adhesion example

A

allows the water molecules to stick to the plant walls

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11
Q

transpiration

A

loss of water from a plant due to water vapor

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12
Q

hydrophilic

A

attracts water

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13
Q

hydropobic

A

avoids water

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14
Q

surface tension

A

due to cohesion and adhesion
difficulty in breaking the surface of the water

15
Q

specific heat

A

the amount of energy it takes to raise or lower a temperature

16
Q

surface tension example

A

droplet of water on a blade of grass
bugs walking on water

17
Q

high heat of vaporization

A

the amount of energy to convert 1g or a substance from a liquid to a gas

18
Q

crystal lattice

A

argemnat of atoms
water to soilid

19
Q

cellar resperation

A

transport nutrints
chemcial reactions
osmoisi
diffsion