Scientific Measurement

Judith S. de Nuño

Science at Marymount

Office Hours
Daily at Lunch in the Science Patio

Cyber Office Hours
AIM: teachsci23

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Chapter 3 Objectives

  • to distinguish between quantitative and qualitative measurements
  • to convert measurements to scientific notation
  • to discintuish among the accuracy, precision, and error of a measurement
  • to identify the number of significant figures in a measurement and in the result of a calculation
  • to list the SI (International System) units of measurement and common SI prefixes
  • to distinguish between the mass and weight of an object
  • to convert between the Celsius and Kelvin temperature scales

Chapter 3 Outline Framework: Use Concept Summary Page 77 as an aid

  • The Importance of Measurement
    • Qualitative measurement
    • Quantitative measurement
    • Scientific Notation
  • Uncertainty in Measurement
    • Accuracy
    • Precision
    • Error
    • Significant figures in measurements
    • Significant figures in calculations
  • International System of Unit
    • Units of length
    • Units of volume
    • Units of mass
  • Density
    • Determining density
    • Specific gravity
  • Temperature
    • Measuring temperature
    • Temperature scales

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Chapter 3 Terms:

  • absolute zero
  • accepted value
  • accuracy
  • celsius scale
  • density
  • error
  • experimental value
  • gram
  • hydrometer
  • Internation System of units (SI)
  • Kelvin scale
  • kilogram (kg)
  • liter (L)
  • meter (m)
  • percent error
  • precision
  • qualitative measurement
  • quantitative measurement
  • scientific notation
  • significant figure
  • specific gravity
  • temperature
  • volume
  • weight

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Chapter 3 Questions and Problems

  • Answer in complete sentences.....letter answers are insufficient
  • Show all work for problems
  • No Units= No Credit
  • 5~21, 23~24, 26, 28, 32~44, 48~49, 60, 68~69, 77, 80~81, 85~87, 91 and p. 70: A~G

Chapter WebLinks

Interactive Periodic Tables
  • Basic Math Concepts and Fundamentals
  • Did you know many people have math anxiety? It is a common occurance suffered by the best of us. This is a series of readings and practice problem activities for those who are planning to take a science course, but are a little uncertain concerning the math preparation.
    • Scientific Notation
    • Significant Digits
    • Algebra Review
    • Metric System
    • Graphing
    • Additional math links for basic math
  • R. H. Logan, Instructor of Chemistry, Dallas County Community College District, North Lake College.

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