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Mr. Kimball
http://www2.bakersfieldcollege.edu/dkimball
Chemistry B2A
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Welcome to Chemistry 2A
• Sign roll sheet• Attendance the first 2 weeks-don’t be late!• A little about myself• A little about you-Beginning of Class Survey
– New? ESL? International?– Learning Disorders
• Get phone numbers of others in class
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The Class Website and Syllabus
http://www2.bakersfieldcollege.edu/dkimball
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1. Take Responsibility (it’s your education)2. Have Confidence (you can do it!)3. Don‘t Procrastinate (study for final now)4. Read/Listen Precisely (ignore things that just aren’t there)5. Practice (use practice tests)6. Persistence (get up one more time than you fall down)7. Recognize Patterns (most things are done the same way)8. Use Pictures (outline problem)9. Think Sequentially (one step at a time)10. Do Neat work (so you can check it)11. Group Study (explain things to each other)12. Try Something New (don’t keep repeating failures)13. Get Help
Learning Skills
Learning Skills Power Point
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We will discuss these during the first lab period.
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Using This Book
• Each chapter has practice problems throughout the text. Example problems are worked out within the chapter. The Self-Check Exercises found after the example problems have answers in the back of the book.
• Answers to even-numbered questions and problems in the back of each chapter are found in the back of the book.
• In Appendix A are instructions on how to use your calculator as well as a review of basic algebra, scientific notation, graphing and general conversion factors.
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• If you have trouble with a particular problem in the homework, find an example found with the chapter that is similar or look for an even number problem in the back of the chapter that is similar and work it. Compare your answer to the answer in the back of the book.
• You need to practice lots of problems to master the skills you will need.
• Lab 2 in the lab book also teaches how to use the calculator and will be discussed in lab.
Using This Book
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• You can use the Webassign web site for additional resources (Practice it! Read it! Watch it!). Your textbook gives you a password to access the site for more learning aids.
• You should check my Webassign web page for information on accessing and using the Webassign online homework system and my policies regarding problems you may encounter when doing the homework.
Using This Book
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Some students prefer to skim through a course or just get by, just
get to the other side of the lake. This is doing the least you can do!
If you really want to succeed you need to go deep! If you don’t, you will miss a whole world of wonder! This is doing the most you can do!
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1.1 Chemistry: An Introduction
1.2 What is Chemistry?
1.3 Solving Problems Using a Scientific Approach
1.4 The Scientific Method
1.5 Learning Chemistry
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Why Is Chemistry Important?
• New materials• New pharmaceuticals• New energy sources• Food supplies• Help the environment• Can you think of others?
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In this course, you will:
• Learn the principles of chemistry.
• Become a better problem solver!
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Bart Eklund checking air quality at a hazardous waste site.
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• The science that deals with the materials of the universe and the changes these materials undergo.
• The central science. Understanding most other fields of science requires an understanding of chemistry.
1 What is Chemistry?
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1. Recognize the problem and state it clearly.
a) Making an observation.
2. Propose possible solutions to the problem or possible explanations for the observation.
a) Formulating a hypothesis.
3. Decide which of the solutions is the best or decide whether the explanation proposed is reasonable.
a) Performing an experiment.Scientific thinking can help you in all parts of your life!
1 Solving Problems Using a Scientific Approach
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Science
• Science is a framework for gaining and organizing knowledge.
• Science is a plan of action — a procedure for processing and understanding certain types of information.
• Scientists are always challenging our current beliefs about science, asking questions, and experimenting to gain new knowledge. Scientific method is needed.
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Steps in the Scientific Method
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Examples:1. Pons and Fleishman, Univ.
of Utah.2. Horoscope3. Weather.
A mystifying problem from the textbook. Why did David and Susan get sick? Lead Poisoning in Italian pottery.
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Concept Check
Which of the steps in the scientific method is missing from the following situation?
“Your instructor is holding a balloon and quickly inhales some of the gas inside the balloon. He then speaks and his voice changes to a high-pitched sound (and sounds quite funny!). He then asks you to determine what gas was inside the balloon that he inhaled. Based on your observations, you conclude that the gas must be helium.”
a) State the problem.
b) Make observations.
c) Formulate a hypothesis.
d) Perform experiments.
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Scientific Terms
• A summary of what happens.
Law
Theory (Model)
• An explanation why it happens.• Set of tested hypotheses that gives an overall
explanation of some natural phenomenon.
Hypothesis
• A possible explanation for an observation or a guess.
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Law of Gravity. What makes a rocket fly?
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Aristotle
Earth Air Fire Water
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Galileo Galilei
Father of the Scientific Method
Heavy things fall faster than light things????
AristotleFree Fall Movie
The Slinky Experiment
Super Slinky Experiment
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Archimedes
Archimedes lived in Syracuse on the island of Sicily.
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Democritus (460-370 BC)
Greek Philosopher who first coined the word “atomos”
(a=not tomos=cut).
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• Learn the vocabulary.• Memorize important information.• Learn and practice processes.• Keep working and learning from your mistakes.• Ask questions!
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