Unit 2
Course Guide Chm111

Measurement

 

 

Take Exam 1 after completing this Unit

Goal I
Goal II
Goal III
Unit 2 Assignments
Worksheet 2 
Worksheet 3 
Overview
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Unit 2
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Goal I. Use SI units to indicate the accuracy and precision of measurements.

Objectives: To meet the requirements of Goal I, you must be able to:

  1. identify the SI base units and correct abbreviations for the physical quantities given in Table 1.2, p. 17;
  1. know the SI prefixes and their related association factors listed in BOLD in Table 1.3, p. 18;
  1. convert from one SI unit to another; 
  1. distinguish between accuracy and precision; 
  1. relate the number of significant digits used in recording a measured quantity; 
  1. understand the rules for: 
      1. determining the number of significant figures in a reported measurement
      2. for applying significant figures to the results of the mathematical operations of addition-subtraction and multiplication-division. [Top]

Goal II. Apply the rules of measurement to the properties of mass, volume, density, and temperature.

Objectives: To meet the requirements of Goal II, you must be able to:

  1. distinguish between: 
      1. mass, volume and density,
      2. extensive and intensive properties,
      3. heat and temperature;
  1. calculate mass, volume or density given two of the three quantities;
  1. convert temperatures using Celsius, and Kelvin scales.[Top]

Goal III. Understand the relationship between the mass of a sample of matter and the number of its constituent particles.

Objectives: To meet the requirements of Goal III, you must be able to:

  1. explain and correctly use the terms: neutron, isotope, mass number, nuclide, universal atomic mass unit, radioactive nuclide, hydrate
  1. determine the number of protons, neutrons and electrons in atoms and given the specific nuclide notation and vice versa
  1. calculate the average atomic mass for a naturally occurring element from isotope percentage and isotope mass;
  1. calculate the formula mass (FM) [also called molecular mass (MM)] of a compound, given a molecular or ionic formula for that compound, and using atomic masses from the periodic table; 
  1. define mole, Avogadro's number and know the value to 4 significant figures of Avogadro's number;
  1. convert between mass in grams, moles and numbers of atoms. [Top]

Unit 2 Assignments
Read: Text Chapter 1.3, 1.4, 1.5, 1.6, pp. 8-34
Text Chapter 2.5, pp. 53-58
Text Chapter 3.1, pp. 89-95
Video Programs:
  1. Types of Chemical Equations
  2. Measurements and Significant Figures
  3. Mole Concept
Textbook Assignments: Read and Understand all "Sample Problems," "Follow Up Problems" and the blue-colored problems at the end of the chapters.

The answers for the Follow Up Problems are at the end of the chapter; the answers for the blue-colored problems are in Appendix C.The answers for each of these are in Appendix C.

ChemSkill Builder Assignments:

Mandatory assignments to be submitted for grade

Chapter 1.6 Temperature
Chapter 2.1 Scientific notation, 2.2 Significant figures, 2.3 Measurements & interpolation, 2.4 Metric prefixes, 2.5 Dimensional Analysis, 2.6 Density & volume
Chapter 4.1 Mole

f Do Worksheet 2 & Worksheet 3 Submit them via mail to ELI
Take Exam 1 Exam 1 covers Units 1 and 2. You will be given a Periodic Table (without names of elements) for this exam.

You may use a 3" x 5" hand-written study card for Exams 1, 2, 3, 4, and 5. (NOT TO BE USED FOR THE NOMENCLATURE TEST.) You must hand-write the information you would like to have on your card yourself -- no technology miracles allowed. Formulas, constants, definitions, concepts, solubility tables, etc., may be on the study card. NO SAMPLE PROBLEMS are allowed to be on the card. You may write on both sides of the study card. The card must be submitted with your exam. Any abuse of this privilege will result in a failing grade for the course.

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Overview
Unit 0
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9

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