ppt. #1-8 Flashcards
1
Q
define significant figures
A
the digits we are sure of and one uncertain measurement
2
Q
what is the first rule of sig figs?
A
1) all nonzero digits 1-9 are significant
3
Q
what is the second rule of sig figs
A
2) all zeros that begin a number are not significant
4
Q
third rule of sig figs
A
3) zeroes that fall BETWEEN the digits 1-9 are significant
5
Q
fourth rule of sig figs
A
4) zeroes that fall to the right are only significant if there is a DECIMAL POINT
6
Q
rule for adding/subtracting sig figs and mult/dividing
A
you must round the answer to the smallest number of sig figs
7
Q
sig figs and scientific notation
A
only the numbers out front represent the sig figs
8
Q
formula for density
A
mass/volume
9
Q
what is the conversion from cm3 to mL for water?
A
1:1
