Measurement of Objects

Title: Measurement of objects

Objective: To measure various objects using different instruments and record measurement in sig figs and +/- notation

Materials: balance, metric ruler, meter stick, thermometer, 50 mL and 100 mL graduated cylinders, buret, and pipet.

Procedures:

1) Measure a penny using a balance

2) Measure the length of a piece of paper using a metric ruler

3) Measure the length of the lab counter using a meter stick

4) Measure water using a 50 mL graduated cylinder

5) Measure water using a 100 mL graduated cylinder

6) Measure tap water using a thermometer

7) Measure water using buret

8) Measure water using pipet

Observation, Data, and results:

Instrument Measured object Measurement +/-Notation

Balance Penny 2.41g 0.01g

Metric ruler Sheet of paper 27.90cm 00.01cm

Meter stick Length of lab counter 461.31cm 000.01cm

50 mL graduated cylinder Water 42.0mL 00.1mL

100 mL graduated cylinder Water 92.0mL 00.1mL

Thermometer Tap water 23.1 C 00.1 C

Buret Water 19.60mL 00.1mL

Pipet Water 5.1mL 0.1mL

Conclusion: In this lab I learned how to measure objects more closely to its accepted value. To get the measurement that you recorded to be more accurate your answers should include sig figs which are all the measurements that are recorded as all digits that are certain plus the first uncertain digit. Sig figs are important in calculations because they make your answers more accurate. If your answers are not accurate though they can still be precise if they are all in the same distance from the correct measurement.