Chemistry June 25, 2008 1st Qtr

Accuracy
> place value of the smallest line represent in the calibration

Sensitivity
> place value after accuracy

Uncertainty in Measurement
Making Measurements
> certain/exact digits and one uncertain digit

Reading Calibrations
> lines/numbers on your measuring device

Metric Calibration
> easiest to use and understand
> pattern after the METRIC system of measurements
> because the segments are divided into 10.

Find the accuracy and sensitivity of the following measurements:

14.3 mg
accuracy = ones
sensitivity = tenths

29.0
accuracy = ones
sensitivity = tenths

1 ml
accuracy = ones
sensitivity = tenths

0.185
accuracy = hundredths
sensitivity = thousandths

CHEMISTRY and MEASUREMENT
> measuring, calculating characteristics of materials : quantitative

Reading Calibrations
measuring devices
> refers to lines and numbers

Metric Calibration
> each segment is divided into ten equal parts
> metric system of measurements
(multiples of ten)