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Gen chem > Exam 1 > Flashcards

Exam 1 Flashcards

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1
Q

Molecules

A

nonmetal elements that bond

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2
Q

Ionic

A

metal +nonmetal that bond NH4 is a metal when at the beginning

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3
Q

Chemical change

A

you make a new chemical (EX acid plus base)

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4
Q

physical change

A

Nothing chemically changes (EX: heat)

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5
Q

INTensive property

A

INDependent of sample size

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6
Q

EXTensive property

A

More stuff EXTends the property. bigger sample size changes property

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7
Q

Chromatography

A

seperating inks SEPERATES BASED ON POLARITY.

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8
Q

distillation

A

boiling methanol SEPERATE TWO LIQUIDS VIA BOILING POINT

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9
Q

filtration

A

coffee filter SOLID FROM LIQUID

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10
Q

kinetic energy

A

energy of motion (temp)

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11
Q

Potential energy

A

ability to store energy that can become kinetic energy (heat)

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12
Q

volumetric glassware

A

very accurate/ calibrated glassware ex graduated cylinder.

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13
Q

Density equation

A

D = Mass g/volume mL

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14
Q

1 mL = 1 ???

A

cm^3

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15
Q

1.0 + 1.2298887 in sig figs

A

2.2

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16
Q

(1.0 +1.0085749)/ 2.000989 in sig figs

A

1

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17
Q

JJ Thompsom Cathode Ray

A

showed that there were charged particles comming out of atoms (electrons)

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18
Q

Millikan’s Oil drop

A

found out what charge were for electrons via the rate that the drops fell

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19
Q

Rutherfords gold foil

A

shot alpha particles through gold foil and showed that solids weren’t really that solid (most fly through). Proved existence of nucleus

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20
Q

Rutherford’s atom model

A

had a nucleus and a charged space around it filled with electrons.

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21
Q

JJ Thomson’s model

A

plum pudding model, basically soup of charges.

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22
Q

mass spectrometer

A

shows how heavy things are using magnets (counts up atoms)

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23
Q

molecular formula

A

ACTUAL amount of atoms in molecule

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24
Q

empirical formula

A

RATIO of atoms in molecule

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25
Q

7 Diatomic molecules

A

H2, N2, O2, F2, Cl2, Br2, I2,
NOTE NOT FOR ELEMENTAL

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26
Q

Eth-

A

2 carbons

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26
Q

Meth-

A

1 carbon

27
Q

Prop-

A

3 carbons

28
Q

But-

A

4 carbons

29
Q

cyclo-

A

all carbons bounded in a circle

30
Q

OH functional group

A

Alchohol, adds -ol ex: methane to methanol

31
Q

combustion rxn

A

Fuel + 02 = CO2 + H2O

32
Q

avogandros number

A

6.022 x 10^23 amu

33
Q

empirical formula from mass percent

A

percentage x mass / atomic mass/ smallest amount of moles =empirical formula

34
Q

percent yield

A

actual yield/ theoretical yield x 100

35
Q

scaleen factor

A

gets from empirical to molecular

36
Q

Metric system is GI-ME-KI or GMK

A

10^9 10^6 10^3

37
Q

deci (d)

A

10^-1

38
Q

Centi (c)

A

10^-2

39
Q

Milli (m)

A

10^-3

40
Q

Micro (u?)

A

10^-6

41
Q

Nano (n)

A

10^-9

42
Q

Pico (p)

A

10^-12

43
Q

Femto (f)

A

10^-15

44
Q

how many times must we convert m^3 to cm^3?

A

3

45
Q

Kinetic energy equation

A

KE = 1/2 mv^2

46
Q

Discrete element

A

Diatomic element thing H2

47
Q

ite replaced with _____ in acids

A

ous

48
Q

ate replaced with ____ in acids

A

ic

49
Q

5 carbons

A

penta

50
Q

6 carbons

A

Hexa

51
Q

7 carbons

A

hepta

52
Q

8 carbons

A

octa

53
Q

9 carbons

A

nona

54
Q

10 carbons

A

deca

55
Q

formula units

A

amu’s

56
Q

isomers

A

molecules with the same molecular formula, but different structural appearances.

57
Q

PO4 name and charge

A

phosphate 3-

58
Q

C2O4 name and charge

A

Oxalate 2-

59
Q

CO3 name and charge

A

Carbonate 2-

60
Q

Dichromate formula and charge

A

C2O7 2-

61
Q

SO4 name and charge

A

Sulfate 2-

62
Q

SO3 name and charge

A

Sulfite 2-

63
Q

IMP for mass spectrometer questions….

A

Remember diatomics or discrete elements

64
Q
A

Gen chem (6 decks)

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