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Spring 2024 > Chem Week 1-2 > Flashcards

Chem Week 1-2 Flashcards

1
Q

Mass

A

Kilogram (Kg)

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2
Q

Length

A

Meter (m)

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3
Q

Temperature

A

Kelvin (K)

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4
Q

Time

A

Second (s)

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5
Q

Electric current

A

Ampere (A)

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6
Q

Quantity of substance

A

mole (mol)

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7
Q

Speed

A

Distance/time (m/s)

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8
Q

Volume

A

Space (distance^3) m^3
Also L

1cm^3 = 1 mL

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9
Q

Density

A

Mass/volume = kg/m^3 or kg/mL

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10
Q

Energy

A

Joule (kgm^2/s^2)

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11
Q

Power

A

Watt (Joule/s)

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12
Q

deka

A

da, 1

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13
Q

Tera

A

T, 12

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14
Q

Giga

A

G, 9

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15
Q

Mega

A

M, 6

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16
Q

Kilo

A

k, 3

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17
Q

Hecto

A

h, 2

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18
Q

deci

A

d, -1

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19
Q

centi

A

c, -2

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20
Q

milli

A

m, -3

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21
Q

micro

A

mu, -6

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22
Q

nano

A

n, -9

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23
Q

pico

A

p, -12

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24
Q

femto

A

f, -15

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25
Q

temperature

A

measure of average kinetic energy of particles in a sample

26
Q

compare Celsius and kelvin

A

Celsius: based on properties of water, boiling point 100, freezing point 0

Kelvin: based on proprieties of gas, no negative Kelvin temperature, C + 273.15

27
Q

Accuracy

A

Proximity of measurement to true value of quantity

28
Q

Precision

A

Proximity of several measurements to each other (small difference between measurements)

29
Q

Uncertainty

A

Smallest measurable difference, determines limit of precision

30
Q

What are sig figs?

A

Measured digits, number denote uncertainty

31
Q

Element

A

Substances can’t be separated into simpler substances

32
Q

Compounds

A

Groups of DIFFERENT elements

33
Q

Atoms

A

Smallest unit of matter, building blocks of chemistry

34
Q

Mixture

A

Composed of 2+ pure substances

35
Q

Pure substance

A

Simplest forms of matter that can’t be separated into other kinds by physical means

36
Q

Molecules

A

Two or more atoms connected by chemical bonds

37
Q

Intensive properties

A

Properties that characterize pure substance (independent of amount)

38
Q

Extensive properties

A

Dependent on amount of substance

39
Q

Physical processes

A

Change that doesn’t alter chemical identities

40
Q

Chemical reactions

A

Change into compounds with different chemical identities

41
Q

Molecules

A

Groups of atoms

42
Q

Chemical bonds

43
Q

Immiscible

A

Don’t dissolve into each other

44
Q

Distillation

A

Separate via evaporation and condensation (works with different volatility)

45
Q

Filtration

46
Q

Chromatography

A

Separate substances in mixture

47
Q

States of matter

A

Liquid solid gas

48
Q

Sublimation

A

Solid to gas

49
Q

Deposition

A

Gas to solid

50
Q

Condensation

A

Gas to liquid

51
Q

Vaporization

A

Liquid to gas

52
Q

When does energy increase

A

Water melts/vaporizes

53
Q

Where does energy go when water molecules freeze?

54
Q

What happens to energy of molecules of water as it melts or vaporizes?

A

Add energy

55
Q

Energy

A

Ability to do work (exert force through a distance)

56
Q

Work

57
Q

Potential energy

A

Stored energy (composition or position)

58
Q

Kinetic energy

A

Energy of motion
KE=1/2mV^2

59
Q

Heat

A

Amount of energy transferred bc of diff in temp

60
Q

Heat moves ____ to ______

A

Hot to cold

61
Q

Law of conservation of energy

A

Energy cannot be created nor destroyed (transformed!)

62
Q

Diatomic molecules?

A

H, N, O, Fluorine (F) , Chlorine (Cl), Bromine (Br), Iodine (I)

Have No Fear of Ice Cold Beer :))

Spring 2024 (11 decks)

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