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CHM 101 > Exam 1 > Flashcards

Exam 1 Flashcards

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1
Q

matter def

A

mass and volume

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2
Q

scientific method

A

observation, hypohthesis, experimemnt, theory (or model), further experiments

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3
Q

mixture def

A

two or more substances that are physically mixed

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4
Q

intensive property def

A

not dependent on volume

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5
Q

extensive property def

A

dependent on volume

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6
Q

tera

A

10^12

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7
Q

giga

A

10^9

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8
Q

mega

A

10^6

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9
Q

kilo

A

1000

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10
Q

centi

A

0.01

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11
Q

milli

A

0.001

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12
Q

micro

A

10^-6

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13
Q

nano

A

10^-9

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14
Q

pico

A

10^-12

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15
Q

compound def

A

two different elements combined- can not be broken physically

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16
Q

temperature intensive or extensive

A

intensive

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17
Q

solubility intensive or extensive

A

intensive

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18
Q

melting and boiling point intensive or extensive

A

intensive

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19
Q

mass and volume intensive or extensive

A

extensive

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20
Q

celcius to kelvin

A

k=c+273.15

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21
Q

Density equation

A

D=m/v

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22
Q

density units for solids and liquids

A

g/cm^3

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23
Q

density units for gas

A

g/L

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24
Q

adding and subtracting sig figs

A

least number of decimal places

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25
Q

multiplying and dividing sig figs

A

least number of sig figs

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26
Q

chemical property def

A

property observed when a substance changes to form new substances

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27
Q

physical change def

A

only change appearence

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28
Q

chemical change def

A

any reaction

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29
Q

metric units

A

liter, gram, C

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30
Q

SI units

A

cubic meter, kilogram, kelvin

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31
Q

solids shape and volume

A

definite shape and volume

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32
Q

liquids shape and volume

A

definite volume, no definite shape

33
Q

gases shape and volume

A

no definite shape or volume

34
Q

heterogenous mixture

A

you can see stuff in it

35
Q

homogeneous mixture

A

you cant see the barriers between the items

36
Q

how is a mixture separated

A

physically

37
Q

precision def

A

answers are close to each other

38
Q

accuracy def

A

answers agree with correct value

39
Q

protons and neutrons mass

A

1 amu

40
Q

Atomic number (Z) def

A

the number of protons in an atom

41
Q

mass number (A) def

A

number of protons+neutrons

42
Q

isotope def

A

atoms with different numbers of neutrons

43
Q

ion def

A

a charged atom

44
Q

name for a positive ion

A

cation

45
Q

name for a negative ion

A

anion

46
Q

atomic mass def

A

Weighted average of each isotope of an element

47
Q

period def

A

row of periodic table

48
Q

groups def

A

column of periodic table

49
Q

type of element found in group 1A

A

alkali metals

50
Q

type of element found in group 2A

A

alkaline earth metals

51
Q

type of element found in group 8A

A

noble gases

52
Q

type of element found in group 7A

A

halogens

53
Q

1 mole=(avagadros number)

A

6.02x10^23

54
Q

molar mass (g/mol) def

A

the mass in grams of one mole of the substance

55
Q

moles=

A

mass/molar mass

56
Q

electromagnetic spectrum

A

raging monsters invade venus using xray guns (red-blue)

57
Q

frequency(nu) def

A

number of waves that pass through a point in 1 second

58
Q

wavelength(λ)

A

distance from crest to crest of the waves

59
Q

Amplitude

A

the distance between the mid-line of a wave to either crest

60
Q

c=λv

A

speed of light=wavelength x frequency

61
Q

speed of light=

A

3.00x10^8 m/s

62
Q

blackbody radiation def

A

when a solid is heated under certain conditions it glows

63
Q

photoelectric effect def

A

when a metal surface si exposed to light sometimes electrons are emitted

64
Q

bohr’s model line spectra

A

when atoms are exposed to energy at specific wavelengths they emit visible light

65
Q

heisenberg uncertainty

A

we can either know where a subatomic particle is or how fast is is going but not both at the same time

66
Q

principal quantum number (n)-usually 1-7

A

tells us how far we are from the nucleus as well as the size of the orbital

67
Q

angular momentum quantum number (l)

A

describes the shape of the orbital

68
Q

l=0

A

s orbital, sphere

69
Q

l=1

A

p orbital, dumbbell

70
Q

l=2

A

d orbital, clover

71
Q

l=3 f orbital

A
72
Q

electron spin quantum number (m sub s)

A

describes the spin of the electron either 1/2 or -1/2

73
Q

magnetic quantum number (m sub l)

A

describes the orientation of the orbital in space

74
Q

energy levels of orbitals

A

s<p<d<f

75
Q

of electrons in d orbital

A

10

76
Q

of electrons in f orbital

A

14

77
Q

of electrons in porbital

A

6

78
Q

of electrons in s orbital

A

2

CHM 101 (1 decks)

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