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Principles of Chemistry (Lecture) > Module 2: Measurements > Flashcards

Module 2: Measurements Flashcards

1
Q

This provide macroscopic information that describe the behavior of matter

A

Measurements

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2
Q

Signify the size or magnitude in a measurement

A

Number

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3
Q

Signify a standard of comparison in a measurement

A

Unit

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4
Q

The last digit in the number indicate this information in a measurement

A

Uncertainty of measurement

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5
Q

Three information in a measurement

A

a number, a unit and an indication of the uncertainty of measurement

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6
Q

International System of Units that has been used since 1964

A

SI Units

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7
Q

7 base units of SI systems

A

meter, kilogram, second, kelvin, ampere, mole, candela

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8
Q

10 e-15

A

femto

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9
Q

10 e-12

A

pico

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10
Q

10 e-9

A

nano

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11
Q

10 e-6

A

micro

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12
Q

10 e-3

A

milli

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13
Q

10 e-2

A

centi

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14
Q

10 e-1

A

deci

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15
Q

10 e3

A

kilo

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16
Q

10 e6

A

mega

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17
Q

10 e9

A

giga

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18
Q

10 e12

A

tera

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19
Q

this is the distance light in a vacuum travels in 1/299,792,458 of a second

A

Meter (m)

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20
Q

SI unit for length

A

Meter (m)

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21
Q

This is defined by a certain cylinder of platinum-iridium alloy

A

Kilogram (kg)

22
Q

SI unit for mass

A

Kilogram (kg)

23
Q

SI unit for time

A

Seconds (s)

24
Q

Property of matter that does not change as the amount of matter changes

A

Intensive Property

25
Q

Property of matter that changes as the amount of matter changes

A

Extensive Property

26
Q

SI unit for temperature

A

kelvin (K)

27
Q

lowest temperature that can be theoretically achieved

A

0 K

28
Q

this is the coldness or hotness of an object

A

Temperature

29
Q

Temperature where water freezes

A

273.15 K

30
Q

Temperature where water boils

A

373.15 K

31
Q

formula for celsius to fahrenheit

A

Tf = (9/5 x Tc) + 32

32
Q

formula for fahrenheit to celsius

A

Tc = 5/9 x (tf - 32)

33
Q

formula for celsius to Kelvin

A

Tk = Tc + 273.15

34
Q

Derived unit which is the measure of the amount of space occupied by an object

A

Volume (v)

35
Q

The ratio of the mass of a sample of the substance to its volume

A

Density (d)

36
Q

SI unit for density

A

kilogram per cubic meter (kg/m3)

37
Q

formula for density

A

mass / volume

38
Q

type of measurement free from uncertainty

A

Counting

39
Q

all of the digits in a measurement and one uncertain digit

A

Significant Figures

40
Q

Are all nonzero digits significant?

A

Significant

41
Q

Are all captive zeros significant?

A

Significant

42
Q

Are all trailing zeros significant?

A

Trailing zeros are significant if there is a decimal place

43
Q

Are all leading zeros significant?

A

Not significant

44
Q

How can ambiguity in numbers be resolved?

A

Scientific Notation

45
Q

How to round off when the number to be drop is 5?

A

Round up or down whichever yields an even value

46
Q

when measurements yield similar results when repeated in the same manner

A

Precision

47
Q

when a measurement yields a result that is very close to the true or accepted value

A

Accuracy

48
Q

type of error that occurs when the result of a series of measurements produce no observable pattern

A

Random Error

49
Q

type of error that occurs when the results of a series of measurement produce an observable pattern

A

Systematic Error

50
Q

a mathematical approach based on the premise that the unit of quantities must be subjected to the same mathematical operations at their associated numbers

A

Dimensional Analysis

51
Q

another name for dimensional analysis

A

Factor-label method

52
Q

a method used to convert from one unit of measure to another

A

Dimensioanl Analysis

Principles of Chemistry (Lecture) (7 decks)

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