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Biology 2 > 2.5 Study Guide > Flashcards

2.5 Study Guide Flashcards

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1
Q

Adhesion

A

The action of Hydrogen bonding with Water molecules and other substances.

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2
Q

cohesion

A

The attraction of water to other water molecules

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3
Q

solvent

A

dissolves solutes to create solutions.

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4
Q

Specific heat

A

the amount of energy it takes to heat up 1g of a substance by 1 degree celcius.

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5
Q

heat of vaporization

A

Energy it takes for 1 gram of water to evaporate to become water vapor. hydrogen bonds must break for this to happen.

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6
Q

concentration

A

the amount of grams per liter in a solution

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7
Q

pH

A

Potential Hydrogen

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8
Q

pOH

A

Potential Hydroxide

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9
Q

Hydroxide Ion

A

OH-

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10
Q

Hydronium Ion

A

H3O+

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11
Q

acid

A

a substance with a pH lessa than 7 and has more hydronium than hydroxide.

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12
Q

base

A

A substane with a pH that’s more than y7and has more hydroxide than hydronium.

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13
Q

Five properties of water

A

Adhesion+Cohesion, Solvent of life, Ice floats, Specific heat, and Heat of vaporization

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14
Q

Adhesion and Cohesion

A

The polarity of water allows this to happen because we see it is able to attach to itself but also other substances because of the H ion.

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15
Q

Solvent of life

A

The polarity of the water makes H2O a good solvent because many times if it is hydrophilic it will dissolve nicely in water.

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16
Q

Ice floatin

A

The way this is ale to happen is how the H2O bonds to itself to make the ice. It’s not as tightly n=bonded together as water making it less dense even though its a solid.

17
Q

Specific heat

A

The polarity of the H2O creates the ability of the water to heat up without vaporizing fully whci means its hydrogen bonds are breaking and reforming.

18
Q

Heat of Vaporization

A

The polarity of the H2O Aloows the hydrogen bonds to fully break at the heat of vaportization which is how we find it.

19
Q

Why is it important to living things?

A

It’s important to living things especially humans because most of our body is made up of water.

20
Q

What is the [H3O+], [OH-}, and pOH when the pH is 6?

A

the [H30+] is 10^-8, the [OH-] is 10^-6 and the pOH is 8.

21
Q

Given the pH of 5 is the solution neutral, acidic, or basic?

A

acidic

22
Q

given the pOH of 6 is the solution neutral,acidic, or basic?

A

Basic

Biology 2 (6 decks)

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