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marine scince > sea > Flashcards

sea Flashcards

1
Q

explain element

A

element contain only one type of particles called atom
. in an element the atom are all the same
. any substance listed on the periodic table is an element

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2
Q

define compound

A

contain two or more different elements that are bonded together in a fixed ratio giving each compound a fixed chemical formula

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3
Q

define mixture

A

mixture is a substance were two or more elements or compound are added together but the proportion of each can vary

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4
Q

what is a solvent

A

solvent as a substance that dissolve a solute

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5
Q

what is a solute

A

a substance that is dissolved in a solvent

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6
Q

what is a solution

A

as a mixture of one or more solute dissolved in a slovent

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7
Q

what is a solube

A

able to be dissolved especially in water

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8
Q

what is an insoluable

A

not able to be dissolved

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9
Q

what is salt

A

mixture of acid and base

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10
Q

what is inorganic solute

A

sea water contain sodium chlorine potassium magnesium sulfur calcium

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11
Q

what is salanity

A

amount of dissolved salts present in sea water

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12
Q

what is the normal salanity of sea water

A

35ppt

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13
Q

why sea water is salty

A

due to dissolved salts

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14
Q

factors increase salanity

A

evoporation
temperature
less rain fall

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15
Q

factors that decreases salanity

A

precipitation
run off
melting of ice sheet

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16
Q

what are the factors effecting salanity

A

erosion
run off precipitation and evoparation

17
Q

explain why there is a greater rain fall there is a increased of run off but that the concentration of dissolved salt in river is so low

A

it is caused by the saddition of fresh water rather than the removal of salt in water

18
Q

in which area is dissolved oxygen is more

A

at the surface due to atmosphere contact, photosynthesis
in cold water

marine scince (7 decks)

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