What do you do in rounding if there is no number after the five?
If number is even it stays the same. I’d number is odd it rounds up to an even
Multiplying and Dividing Sig Figs
answer can hsve no more sig figs that are in the measurement with the fewest number of sig figs
Adding and Subtracting
answer must have the same number of digits to the right of the decimal point as there are in the measurement having the fewest digits to the right of the decimal point
Density
mass/volume
Mass
g - balance
volume
L - graduated cylinder
cm3 - ruler
l x w x h
Characteristic Property
identifies a substance and is unique to that substance
Accuracy
Calculated with absolute error (error) and relative (percent error)
Absolute Error (Error)
/accepted - experimental/
Percent Error (relative error)
error/accepted x 100%
Precision
mean
absolute deviation
average deviation
relative average deviation
Absolute deviation
/mean - results/
Relative Average Deviation
avg. deviation/mean x 100%
Precision Statement
mean +- average deviation
Temperature
measure of average kinetic energy of particles
Heat
energy transformed between samples of matter because of a difference in temps.
Derived
calculated using formula
Measurement Fundamental
using a tool
millimeters in a meter
1000
decimeters in a meter
10
meters in a dekameter
10
meters in a hectometer
100
1 in. = ? cm
2.54 cm
1cm3 H20 = ?gH20
1 cm3 H20= ?mlH20
1 gH20
1ml H20
