Properties of Water Flashcards

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0
Q

What is the attraction between a hydrogen atom on one water molecule and the oxygen atom on another is known as?

A

hydrogen bond

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1
Q

Which bond gives water its special properties?

A

hydrogen bonds

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2
Q

What are water’s special properties?

A

cohesion (attraction between molecules of the same substance), adhesion (attraction between molecules of different substances), and high heat capacity

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3
Q

How does water’s polarity influence its properties as a solvent?

A

It is able to dissolve both ionic compounds and other polar molecules

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4
Q

What is a mixture?

A

A material composed of two or more elements or compounds that are physically mixed together but not combined chemically

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5
Q

What is a solution

A

A type of mixture that is evenly dispersed

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6
Q

What is a solute?

A

a substance that is dissolved

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7
Q

What is a solvent?

A

A substance in which the solute dissolves

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8
Q

What is a suspension?

A

A type of mixture of water and a no dissolved material

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9
Q

What is the pH scale?

A

A measurement system that indicates the concentration of H+ ions in a solution

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10
Q

From 0-14 which number(s) on the pH scale are basic?

A

8-14 (the higher the more basic)

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11
Q

From 0-14 which number(s) on the pH scale are neutral?

A

7

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12
Q

From 0-14 which number(s) on the pH scale are acidic?

A

0-7 (the lower the more acidic)

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13
Q

What is an acid?

A

Any compound that forms H+ ions in solution

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14
Q

What is a base?

A

A compound that produces hydroxide (OH-) in solution

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15
Q

What are buffers?

A

A weak acid/base that reacts with reacts with strong acids/bases to prevent sharp change in pH

16
Q

Why is it important for cells to buffer solutions again rapid changes in pH?

A

Buffers dissolved in life’s fluids play an important role in maintaining homeostasis

17
Q

Why is water a polar molecule?

A

oxygen takes shared electrons making it negative and hydrogen positive

18
Q

Is water polar or non-polar?

A

Polar