2.3. Verification of Standards

Try these first

1. 1.

   What is a standard in measurement?

   Hint

   Think about how we check our weight on a scale.

2. 2.

   Why is accuracy important?

   Hint

   Consider the implications of measuring inaccurately.

3. 3.

   What defines a standard in measurement?

   • A frequently used tool
   • A known reference value
   • A subjective opinion

   Hint

   Remember what we discussed about verifying measurements.

4. 4.

   True or False: Calibration is only necessary once when an instrument is purchased.

   • True
   • False

   Hint

   Consider how instruments may change over time.

5. 5.

   If a weighing scale consistently measures a standard weight of 100 grams as 98 grams, explain how this impacts its reliability in laboratory measurements.

   Hint

   Consider what might happen in a serious experiment.

6. 6.

   Design a verification schedule for measuring environmental pollutants to ensure that your analysis maintains accuracy.

   Hint

   Remember to account for different environmental conditions affecting your measurements.