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Biology 100 > Properties of Water > Flashcards

Properties of Water Flashcards

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1
Q

What are the 6 properties of water?

A

Molecular, Cohesion, Density, Adhesion, Solubility, Thermal

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2
Q

What bonds allows water molecules to stick together?

A

Hydrogen bonds

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3
Q

Is water a polar or nonpolar molecule?

A

Polar

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4
Q

What is cohesion?

A

Tendency of molecules of the same type to stick together

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5
Q

What is surface tension?

A

a measure of how much force is needed to break the bonds on water’s surface

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6
Q

True or False? Water has high surface tension

A

True. It has adhesive properties

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7
Q

What characteristic of water allows droplets and beads to form?

A

Surface tension

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8
Q

What is Adhesion?

A

The clinging of one substance to another

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9
Q

What is Density?

A

How closely packed together molecules are

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10
Q

Which object is more dense: Ice or Water?

A

Water

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11
Q

True or False? Less dense objects sink, while denser objects rise

A

False

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12
Q

What is Solubility?

A

How well a substance dissolves in another substance

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13
Q

What substance dissolves more solutes than any other solvent?

A

Water

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14
Q

What is a Solution?

A

A solute and a solvent

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15
Q

What is a Solute?

A

The substance that is being dissolved

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16
Q

What is a Solvent?

A

The agent that does the dissolving

17
Q

What are Acids?

A

Liquids with a PH below 7

18
Q

What are Bases?

A

Liquids with a PH above 7

19
Q

What substance resists changes in PH?

A

Buffers

20
Q

What does PH measure?

A

The amount of hydrogen ions in a liquid

21
Q

As the PH number decreases, the amount of hydrogen ions….

A

Increases

22
Q

Sweating is an example of what property of water?

A

Ability to Regulate Temperature

23
Q

What is a polar molecule?

A

A molecule with an opposite electrical charge on each end

24
Q

What does ‘High Specific Heat’ mean?

A

A large amount of heat is needed to raise the temperature

25
Q

On a molecular level, why do water molecules stick together?

A

One side has a positive charge and the other side has a negative charge

26
Q

What process allows water to move from the roots to the leaves of a plant?

A

Capillary action

27
Q

Which end of water has a slight negative charge?

A

The oxygen end

28
Q

Which end of water has a slight positive charge?

A

The hydrogen end

29
Q

The oxygen end of a water molecule has a slight ____ charge

A

Negative

30
Q

The hydrogen end of a water molecule has a slight ____ charge

A

Positive

31
Q

What property of water makes ice less dense than liquid water?

A

Expansion Upon Freezing (Air fills in gaps)

Biology 100 (9 decks)

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