Chapter 1 - Methods & Measurement
Matter: Anything that has mass and occupies space
Matter can be classified in two ways
1
,Metric System Prefixes
Prefix Abbreviation Meaning
Mega M 106
Kilo K 103
Deka Da 101
Deci d 10−1
Centi c 10−2
Milli m 10−3
Micro µ 10−6
Nano n 10−9
2
, Exact & Inexact Numbers:
Inexact Numbers: Have uncertainty by definition
Exact Numbers: Consequence of counting
A set of counted items (beakers on a shelf) has no uncertainty
Exact numbers by definition have an infinite number of significant figures
3
Matter: Anything that has mass and occupies space
Matter can be classified in two ways
1
,Metric System Prefixes
Prefix Abbreviation Meaning
Mega M 106
Kilo K 103
Deka Da 101
Deci d 10−1
Centi c 10−2
Milli m 10−3
Micro µ 10−6
Nano n 10−9
2
, Exact & Inexact Numbers:
Inexact Numbers: Have uncertainty by definition
Exact Numbers: Consequence of counting
A set of counted items (beakers on a shelf) has no uncertainty
Exact numbers by definition have an infinite number of significant figures
3
