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Chemistry > unit 5 > Flashcards

unit 5 Flashcards

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1
Q

homogeneous

A

mixture that: looks the same throughout

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2
Q

heterogeneous

A

mixture that: looks different throughout

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3
Q

mixture

A

2 or more substances that are physically blended

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4
Q

soulution

A

homogenous, no settling, has tyndall efffect

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5
Q

solute

A

what is dissolved

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6
Q

solvent

A

what id doing the dissolving

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7
Q

hydrophobic

A

does not like water, does not mix with water

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8
Q

hydrophillic

A

likes water, mixes easily with water

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9
Q

things that are ____ dissolve things that are _____

A

alike

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10
Q

what factors affect the rate and solubility of solids/liquids?

A

1) surface area 2) Temperature 3) agitation

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11
Q

what is the relationship between temp. and a solid?

A

direct; as the temp increases the solubility increases

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12
Q

what is the relationship between agitation and a solid?

A

direct; agitation increases, the solubility increases

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13
Q

what is the relationship between surface area and a sloid?

A

direct; as the surface area increases the solubility increases

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14
Q

what property in water is largely responsible for the solvent action of the molecule?

A

the polarity; water is partcially positive and negative

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15
Q

what is a polar covalent molecule?

A

no metals; a covalent molecule that has (+) and (-) ends; dissolves in water

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16
Q

what is a non-polar covalent molecule?

A

a covalent molecule with evenlyu distrubuted charges; will NOT dissolve in water

17
Q

what is and ionic molecule?

A

metal cation in a non-metal anion; will dissolve in water

18
Q

what must be present for a solution to conduct electricity?

A

(+) and (-) ions

19
Q

what is distilled water?

A

pure water

20
Q

does distilled water conduct electricity?

A

no; there are no ions present

21
Q

what type of compounds conduct electricity?

A

ionic

22
Q

which compounds do not conduct electricity?

A

covalent

23
Q

what type of compounds are electrolytes?

A

Ionic

24
Q

define electrolyte

A

conducts electricity

25
Q

concentration

A

the amount of solute in a given amount of solvent

26
Q

saturation

A

the amount of solute per gram in a solvent

27
Q

unsaturated

A

contains less than the max amount os solute taht a solution can hold at normal temp

28
Q

saturated

A

a solution cantans the max amount of solute at normal temp

29
Q

supersaturated

A

contains more than the max amount of solvent at normal temp

Chemistry (6 decks)

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