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AP Chemistry > factoids > Flashcards

factoids Flashcards

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1
Q

what is the electrolysis of water? (put energy in)

A

2H2O -> 2H2 + O2

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2
Q

what is lead (II) iodide?

A

bright yellow precipitate

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3
Q

what color are solutions of Cu?

A

blue

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4
Q

what is Cl2?

A

greenish-yellow gas

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5
Q

what is tin?

A

soft silvery metal

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6
Q

what is limestone?

A

CaCO3

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7
Q

when heated, limestone makes…

A

CaO + CO2

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8
Q

phenolphthalein turns __ under __ conditions

A

pink, basic

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9
Q

what is nitric acid?

A

HNO3

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10
Q

nitric acid has the ability to…

A

oxidize stable metals when other acids cannot

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11
Q

hard water contains __ and __ in high concentration

A

Ca 2+ and Mg 2+

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12
Q

what was used in Roman pipes because of its malleability?

A

Pb to their demise

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13
Q

most atomic clocks use __ and run __

A

Sc, GPS

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14
Q

lime is a term for __ or __

A

CaO, CaOH

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15
Q

in its elemental state, carbon is __ or __

A

graphite, diamond

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16
Q

what is formaldehyde used for?

A

preserving tissues

17
Q

what is formaldehyde?

A

CH2O or HCHO

18
Q

vinegar is an aqueous solution of …

A

acetic acid

19
Q

what is acetic acid?

A

HC2H3O2

20
Q

what is Br?

A

reddish brown liquid

21
Q

what is an amalgam?

A

an allow of Hg usually mixed with Ag

22
Q

what color is I2 as a solid?

A

grayish

23
Q

what color is I2 as a vapor?

A

purple

24
Q

what is F2?

A

pale yellow gas

25
Q

what color is dichromate (Cr2O7 2-) is solution?

A

orange

26
Q

what is dichromate?

A

Cr2O7 2-

27
Q

what color are solutions of Fe?

A

reddish-brown

28
Q

what is the only chemical with a different name in all 3 phases?

A

H2O

29
Q

acetylsalicyclic acid is a __ used to treat __ in __

A

white crystalline compound, fever and pain, aspirin

30
Q

SnF2 is __ because it

A

active ingredient in brand name toothpaste,

capitalize on oxidizing effectiveness of fluoride ions

31
Q

F- is __ because it is __

A

put into tap water, good for your teeth

32
Q

chlorofluorocarbons (CF2Cl2) __ and are used in__

A

contribute to ozone (O3) depletion,

fridges, propellants, degreasing solvents

33
Q

what are chlorofluorocarbons?

A

CF2Cl2

34
Q

hydrocarbons are made of __ and __

A

H, C

AP Chemistry (3 decks)

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