Chapter 1 - Scientific Method Science is not just a collection of facts and theories Also a process to approach problems Remember Scientists have

Chapter 1 - Scientific Method Science is not just a...

This preview shows page 1 - 5 out of 16 pages.

Scientific Method Science is not just a collection of facts and theories Also a process to approach problems Remember Scientists have knowledge that impacts hypotheses (bias) More than one model can describe observations Models do not always or often correspond to reality Observation Hypothesis Experiment 1
Image of page 1
Making Measurements Measurements have some degree of uncertainty 2
Image of page 2
Precision vs. Accuracy Precision: how close together different measurements are Accuracy: How close measurement is to actual result 3
Image of page 3
The melting point of pure benzoic acid is 122°C. Data obtained by four students in a laboratory experiment are shown. Which student’s data are relatively precise but not accurate? Student A Student B Student C Student D 115 ° C 119 ° C 122 ° C 118 ° C 112 ° C 118 ° C 121 ° C 120 ° C 118 ° C 119 ° C 122 ° C 124 ° C 116 ° C 120 ° C 121 ° C 126
Image of page 4
Image of page 5

You've reached the end of your free preview.

Want to read all 16 pages?

  • Spring '08
  • Kenney
  • Chemistry, Review, Accuracy and precision, Chemical substance, Compound substance- substance

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture