Water Flashcards

1
Q

What are 3 factors of water

A

All outer shells are filled, neutral change overall, and strong covalent bonds

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2
Q

Although the water molecule is neutral and electrons are shared evenly by each atom, which atoms attracts the electron more strongly

A

The oxygen atom

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3
Q

Which atom is larger with more protons?

A

The oxygen atom

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4
Q

Since the oxygen atom is larger with more protons what does it have

A

Greater electronegativity

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5
Q

Therefore what do the shared electrons spend more time closer to

A

The oxygen atom

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6
Q

What does the oxygen side of the molecule have?

A

A magnet like negative charge

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7
Q

What do the hydrogen atoms have?

A

A positive charge

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8
Q

What is it called when parts of a molecule have positively and negatively charged ends

A

Polarity

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9
Q

Since the laws of attraction and repulsion are at work in any soultion of water what is happening?

A

There are forces pushing the molecules around.

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10
Q

What gives water the special physical properties that are excellent for promoting life?

A

Huge numbers of hydrogen bonds

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11
Q

What is cohesion

A

Water molecules stick to eachother

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12
Q

What is surface tension

A

The measurement of how difficult it is to break the surface of a liquid

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13
Q

What is adhesion

A

Water molecules stick to other polar substances

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14
Q

What explains how things dissolve in water

A

Adhesion

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15
Q

What substance is less dense as a solid then as a liquid

A

Water

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16
Q

Why is water less dense as a solid than as a liquid

A

Hydrogen bonding

17
Q

What does frozen water do

A

Float

18
Q

What are important ramifications for life?

A

Promotes water circulation in bodies of water, regulates climate, ensures transition from season to season

19
Q

What is the most important quaility of water

A

It dissolves water making it an excellent solvent

20
Q

Water provides an excellent medium for things to mix together. True or False

A

True

21
Q

What do water molecules do when a non polar molecule is added to water?

A

Act to exclude the non polar substance

22
Q

Why are they all forced together in one stop

A

Water molecules only associate with eachother

23
Q

Are non polar molecules hydrophobic or hydrophillic

A

Hydrophobic

24
Q

What is hydrogen bonding

A

Non polar molecules bonding together in water

25
Q

Are polar molecules hydrophobic or hydrophillic

A

Hydrophillic