Module 2: Measurements

Question 1

This provide macroscopic information that describe the behavior of matter

Answer 1

Measurements

Question 2

Signify the size or magnitude in a measurement

Answer 2

Number

Question 3

Signify a standard of comparison in a measurement

Answer 3

Unit

Question 4

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

Answer 4

Uncertainty of measurement

Question 5

Three information in a measurement

Answer 5

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

Question 6

International System of Units that has been used since 1964

Answer 6

SI Units

Question 7

7 base units of SI systems

Answer 7

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

Question 8

10 e-15

Answer 8

femto

Question 9

10 e-12

Answer 9

pico

Question 10

10 e-9

Answer 10

nano

Question 11

10 e-6

Answer 11

micro

Question 12

10 e-3

Answer 12

milli

Question 13

10 e-2

Answer 13

centi

Question 14

10 e-1

Answer 14

deci

Question 15

10 e3

Answer 15

kilo

Question 16

10 e6

Answer 16

mega

Question 17

10 e9

Answer 17

giga

Question 18

10 e12

Answer 18

tera

Question 19

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

Answer 19

Meter (m)

Question 20

SI unit for length

Answer 20

Meter (m)

Question 21

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

Answer 21

Kilogram (kg)

Question 22

SI unit for mass

Answer 22

Kilogram (kg)

Question 23

SI unit for time

Answer 23

Seconds (s)

Question 24

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

Answer 24

Intensive Property

Question 25

Property of matter that changes as the amount of matter changes

Answer 25

Extensive Property

Question 26

SI unit for temperature

Answer 26

kelvin (K)

Question 27

lowest temperature that can be theoretically achieved

Answer 27

0 K

Question 28

this is the coldness or hotness of an object

Answer 28

Temperature

Question 29

Temperature where water freezes

Answer 29

273.15 K

Question 30

Temperature where water boils

Answer 30

373.15 K

Question 31

formula for celsius to fahrenheit

Answer 31

Tf = (9/5 x Tc) + 32

Question 32

formula for fahrenheit to celsius

Answer 32

Tc = 5/9 x (tf - 32)

Question 33

formula for celsius to Kelvin

Answer 33

Tk = Tc + 273.15

Question 34

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

Answer 34

Volume (v)

Question 35

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

Answer 35

Density (d)

Question 36

SI unit for density

Answer 36

kilogram per cubic meter (kg/m3)

Question 37

formula for density

Answer 37

mass / volume

Question 38

type of measurement free from uncertainty

Answer 38

Counting

Question 39

all of the digits in a measurement and one uncertain digit

Answer 39

Significant Figures

Question 40

Are all nonzero digits significant?

Answer 40

Significant

Question 41

Are all captive zeros significant?

Answer 41

Significant

Question 42

Are all trailing zeros significant?

Answer 42

Trailing zeros are significant if there is a decimal place

Question 43

Are all leading zeros significant?

Answer 43

Not significant

Question 44

How can ambiguity in numbers be resolved?

Answer 44

Scientific Notation

Question 45

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

Answer 45

Round up or down whichever yields an even value

Question 46

when measurements yield similar results when repeated in the same manner

Answer 46

Precision

Question 47

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

Answer 47

Accuracy

Question 48

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

Answer 48

Random Error

Question 49

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

Answer 49

Systematic Error

Question 50

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

Answer 50

Dimensional Analysis

Question 51

another name for dimensional analysis

Answer 51

Factor-label method

Question 52

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

Answer 52

Dimensioanl Analysis