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Chemistry 3A Spring 2009. Brett Williams Lecture: TTh 6:00am-6:55 pm in: Cunn 301 Lab: TTh 7:00 pm-9:55 pm in: Cunn 301. I can be reached by:. E-mail: [email protected] E-mail: [email protected] Course Info. Lectures Problem sets Assigned homework Quizzes

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chemistry 3a spring 2009

Chemistry 3ASpring 2009

Brett Williams

Lecture: TTh 6:00am-6:55 pm

in: Cunn 301

Lab: TTh 7:00 pm-9:55 pm

in: Cunn 301

course info
Course Info
  • Lectures
  • Problem sets
  • Assigned homework
  • Quizzes
  • Lab exercises
  • Lab experiments
  • Worksheets
  • 4 Exams and 1 Final Exam
lecture
Lecture
  • Presented on computer overheads
  • Lecture notes are available
    • By downloading files (go to Adj. Faculty Site): www.deltacollege.edu/emp/bwilliams
    • Not required, but recommended
  • Lecture notes complement the textbook/assignments but attendance is essential to get all of the information you need
problem sets
Problem Sets
  • Usually succeed the lecture
  • Several practice problems associated with the current lecture topic
  • These handouts will be covered in class
  • Problems are to assist you with homework assignments
  • Not collected or graded
  • Answers will be given or posted during the lab period
homework
Homework
  • Assigned for each chapter
  • Problems are placed throughout the chapter
  • All odd numbered answers are placed at the end of the chapter
  • Not collected or graded
  • Not mandatory, but if you don’t do the HW (most likely) it will affect your performance on the quizzes
quizzes
Quizzes
  • Five Chapter Quizzes
    • 20 pts each
    • No make-ups
  • Based on the homework assignments for that chapter
  • 20-30 minutes long
  • Given during the first hour
  • The best 4 of 5chapter quizzes are used in your total score
  • Two Name and Formula Quizzes for Chapter 5
other lab assignments
Other Lab Assignments
  • Lab Exercises
    • Most will originate from your laboratory textbook
    • All exercises aregraded assignments
  • Worksheets
    • To be completed during lab period
    • A review to prepare for exams
experiments
Experiments
  • 10 experiments
    • 20 Points Each
    • Labs are due in one week (i.e., If the lab is done in class on Monday, the lab report is due the following Monday)
    • 60 % rule: Must meet this minimum score in lab to pass the course. No exceptions
    • The best 9 of 10 expt’s are used in your total score
exams
Exams
  • Four Exams
    • Based on the chapters which are listed in the syllabus
    • 100 points each
    • All exams count in total score
    • Time: 2 hours to complete
final exam
Final Exam
  • Thursday, May 21st, 4 PM
  • 2 Hours
  • Cumulative Exam
  • 200 points
grading scale
Grading Scale

(Based on 1000 possible points)

90.0 - 100 % A

75.0 - 89.9 % B

60.0 - 74.9 % C

50.0 - 59.9% D

< 50.0 % F

required materials
Required Materials
  • Textbook:Basic Chemistry, 2nd ed. by Timberlake & Timberlake
  • Laboratory Manual:Foundations of Chemistry in the Laboratory, 12th ed. by M. Hein, et al
  • Calculator
  • Safety Goggles & Lock
laboratory policy
Laboratory Policy
  • No one may participate in lab wearing open toe / heel shoes. Watch what you wear on lab days. If you have inappropriate attire, you will NOT be allowed to complete the lab
  • Goggles must be worn during all lab experiments
  • Your attendance will be monitored
chapter 1

Chapter 1

Chemistry In

Our Lives

chemistry and chemicals
Chemistry and Chemicals
  • Chemistry
    • The study of the properties and the behavior of matter
    • Composition, structure, and reactions
  • All things around you are composed of matter
  • Chemistry occurs around you everyday and affects everything you use and do.
  • It helps us to understand our world and how it works
chemistry and chemicals1
Chemistry and Chemicals
  • Chemical processes occur in nature and happen around you all of the time
  • Chemistry (reactions) occurs when
    • food is cooked or baked
    • chlorine is added to a pool
    • batteries are used in a flashlight/radio
    • salt is added to sidewalks and roads
    • bleach is added to laundry
chemical processes
Chemical Processes
  • In nature
    • fermentation by microbes which converts sugars to alcohols
    • photosynthesis by plants to convert sunlight energy into chemical energy
    • leaves changing color due to the interaction of different pigments
chemical processes1
Chemical Processes
  • In laboratories and in manufacturing
    • gasoline refining (distillation)
    • development of synthetic fibers (nylon, dacron)
    • new pharmaceuticals (design and synthesis)
    • water purification (water softening)
    • agriculture/food production (pesticides, fungicides, herbicides)
chemistry and chemicals2
Chemistry and Chemicals
  • Everything around you is composed of chemicals
  • A chemical is a material used or produced in a chemical process (laboratory, manufacturing or natural).
  • A substance is a chemical that consists of one type of matter
    • It consists of two or more bound elements in a fixed ratio
    • Same composition and properties throughout
  • Substances that were developed by chemists are in use everyday
    • Soaps, toothpaste, lotion, clothing
scientific disciplines
Scientific Disciplines
  • Science is the study in which humans attempt to explain knowledge about themselves and their surroundings
    • Facts are organized and explained, in a systematic and logical manner
  • It is an attempt to understand (better) how nature works
    • Through observation of physical evidence (phenomena)
    • Experiments to simulate events under controlled conditions
scientific discipline
Scientific Discipline
  • Science covers an enormous range of accumulated information which is divided into branches called scientific disciplines
  • Chemistry is one of the branches of science (botany, geology, physics, zoology)
scientific method
Scientific Method
  • Most scientific and technological advances are through the use of experimentation as a method of problem-solving
  • In general, no two scientist will approach a problem exactly in the same manner
  • There are guidelines for the practice of science to achieve systematic experimentation: The Scientific Method
    • Scientific Method: A set of procedures (steps) used to acquire knowledge and explain an observable fact
scientific method1
Scientific Method

The scientific method process (steps):

  • Observations: Identify the problem and plan procedures to obtain information
    • Collect Data: Observe, describe, and take measurements (data)
    • Organize data to find patterns in the information
  • Once sufficient data is collected, form a hypothesis
    • A hypothesis is a possible model or statement that offers an explanation for the observations
hypothesis theory law
Hypothesis, Theory, Law
  • Experiments: A well-defined, controlled procedure to obtain information
    • To validate the hypothesis perform more experiments
    • If an experiment is performed under exactly the same conditions, the same results (facts) should occur
    • If results are different than predicted, modify or propose a new hypothesis
  • Theory
    • A hypothesis that has been tested and validated over a long period of time
    • Hypothesis evolves to theory if experiments are repeated and confirm the hypothesis
hypothesis theory law1
Hypothesis, Theory, Law
  • If after extensive testing the reliability of a hypothesis become very high, it will evolve to a theory
  • A theory allows a scientist to predict the outcome of proposed experiments
  • If results of future experiments conflict with the current theory it must either be modified, restated, or even replaced
hypothesis theory law2
Hypothesis, Theory, Law
  • After determining what facts are known about a selected problem, more experimentation is performed to obtain more information
  • More facts are obtained. Look for repeating patterns among the collected facts
  • If a large number of facts are tied together, it can eventually lead to a single generalized statement
  • Law: A concise, verbal statement that summarizes facts about a natural phenomena
using the scientific method
Using the Scientific Method

In Summary:

  • Identify the problem and plan procedures to obtain information
  • Collect data through observation and experimentation
    • Qualitative: Do not involve a number
    • Quantitative: Involve measurements
  • Analyze and organize the data to summarize observations (form generalizations)
  • Suggest probable explanations (form a hypothesis)
  • Experiment further to prove or disprove the proposed explanations
benefits to studying chemistry
Benefits to Studying Chemistry
  • To further understand our world and its impact on our daily living (health care, natural resources, environmental protection, food supply)
  • Provides insight into other areas of modern science and technology
  • Learn Problem-Solving Skills
    • The ability to solve complicated chemistry problems can be applied to other types of problem-solving
  • Help you develop a systematic approach to scientific thought (logical, analytical)
    • Enhances your ability to predict future events based on patterns of behavior
learning chemistry
Learning Chemistry
  • Learn the terms (vocabulary)
    • Some memorization is required
  • Use Active Learning: Read the text, attend lecture and practice “problem solving”
  • Problem solving will include study checks, sample problems, and questions and problems
  • Class: Problem sets, exercises
learning chemistry1
Learning Chemistry
  • Develop your own study plan
    • Do the recommended problems
    • Your confidence and problem solving skills are enhanced through repetition
    • Don’t expect to “get it” the first time you

see it

    • Read the text, come to class
    • Ask questions
homework1
Homework
  • “Sample problems”

1.1 and 1.2

“Study checks, succeed all sample problems”

  • “Questions and Problems”

1.11, 1.13, 1.17

  • “Understanding the Concepts”

1.19, 1.21

  • “Additional Questions and Problems”

1.23, 1.25, 1.27

  • “Challenge Questions”

1.29

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