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chemistry 102 > test 1 > Flashcards

test 1 Flashcards

1
Q

intensive properties

A

density, temperature melting point, color

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2
Q

extensive properties

A

volume, mass

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3
Q

physical properties

A

tempature, color, melting point, odor

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4
Q

chemical properties

A

rusting, combustion, hardening

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5
Q

how many kilometers= one meter

A

1000

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6
Q

how many megameters= one meter

A

1,000,000,000

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7
Q

how many picometers in one meter

A

100,000,000,000

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8
Q

how many centimeters in one meter

A

100

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8
Q

how many milimeters in one meter

A

1000

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8
Q

pure substance

A

made up of only one type of particle
(one component), and its composition is invariant

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8
Q

specific heat

A

the amount of ebnergy required to raise the tempature of 1g of a substance by 1 degree K

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9
Q

mixture

A

a substance composed of two or more
components in proportions that can vary from one
sample to another.

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10
Q

homogeneous mixture

A

same proportion of components
throughout/appearance/same phase (KOOL AID)

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11
Q

heterogeous mixture

A

different proportion of components
throughout/appearance varies/different phases ( STEW)

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12
Q

1dm^3=

A

1L

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13
Q

1cm^3=

A

1mL

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14
Q

when an element or compound has a large specific heat it means that they are good_______

A

insulators

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15
Q

when an element or compound has a small specific heat it means that they are good ________

A

conductor

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16
Q

specific heat

A

amount of energy required to raise the temp of 1g of a substance by 1 degree

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17
Q

acuracy

A

how close to the actual value

18
Q

precision

A

how close the measurements match one another

19
Q

random error

A

equal chance of measurement being too high or too low

20
Q

systematic error

A

either too high or too low because of a calibration error

21
Q

what are the ways to separate a pure substance

A

filtration, centerfusion, evaporation

22
Q

can mixtures be physically separated

A

yes

23
Q

can pure substances be phhysically separated

A

no

24
Q

what does the atomic numvber tell us

A

number of protons and electrons (if the atom is nuetral)

25
Q

what does the mass number tell us

A

protons+ nuetrons

26
Q

qualities of metals

A

good conductors, maluable, ductile, solid at room temp

27
Q

qualities of nonmetals

A

poor conductors, brittle,

28
Q

how many orbitals in s subshel

A

1

29
Q

how many orbitals in p subshell

A

3

30
Q

how many orbitals in d subshell

A

5

31
Q

how many orbitals in f subshell

A

6

32
Q

formula fpor core electrons

A

total e- valence e

33
Q

if an ion has a negative charge that means it is ________ in size

A

greater

34
Q

if an ion has a positive charge that means it is ______ in size

A

smaller

35
Q

the more negative the electron affinity is the _______ the attractition for an electron

A

greater

36
Q

discrepancies of electron affinity

A

Li>Be
C>N

37
Q

covalent bonds are between what typoes of atoms

A

nonmetal+ nonmetal
or mettaliod+ nonmetal

38
Q

ionic bonds are between what types of atoms

A

metal+ nonmetal

39
Q

is ionic bonds or covalent bonds stronger

A

ionic

40
Q

properties of ionic bons

A

high MP and BP

41
Q

properties of covalent bonds

A

low BP and MP

42
Q

a strong electronegativity means that there ios a ________ electron attraction

A

weak

43
Q

is electronegativity is > 1.9 then it is an ______ bond

A

ionic

44
Q

if electronegativity is < 0.5 then it is a _______ bond

A

non polar covalent

45
Q

is electronegatiovity is between 1.9 and .5 then it is an _________ bond

A

polar covalent bond

chemistry 102 (3 decks)

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