chemistry 103 (fall 2014) instructor: dr. larry tirri
TRANSCRIPT
Chemistry 103 (Fall 2014)
Instructor: Dr. Larry Tirri
OUTLINE
• Introduction to Course– Syllabus
• What is Chemistry?– Matter defined– Physical vs. Chemical
• Historical Perspectives
• The Scientific Method
• The Periodic Table
SYLLABUS
CHEM 103
Section 1002
Fall 2014
Course: Preparatory Chemistry
Text: “Basic Chemistry,” Timberlake & Timberlake, Fourth Edition
e-text and online tutoring, exercises, homework and quizzes can be found at http://www.masteringchemistry.com/
Course ID TIRRICHEM103FALL14
Please use your RebelMail account when registering for
MasteringChemistry.
Lecture: MW 4:00 PM – 5:15 PM FDH 109
Instructor: Dr. Larry Tirri
Office: CHE 218
Office Hours: Open Door Policy Whenever office door is open
Phone: 702-895-4281 E-mail: [email protected]
Course Description & Purpose:
Chemistry 103 (3 credits) is designed for students who wish to qualify for Chemistry 121. The course does not satisfy the General Education Core Science Requirement.
Corequisites:
Enrollment in MATH 096 or placement in MATH 124 or higher.
Math skills are critical for your success.
Course Web Page:
• https://webcampus.unlv.edu/ ,is the current log in page for Blackboard Learn, the new UNLV WebCampus course management tool. Students will login using your Rebelmail prefix and your initial password is your date of birth in the MMDDYYYY format. First time users can change your password once you log in. For assistance, please call the student help line – 895-0761.
• Exam scores will be posted here. All assignment and quiz scores will be posted on the Mastering Chemistry WebSite.
Learning Objectives and Outcomes:
The learning objectives and outcomes of this course include mastery of the following topics:
* Understand the mechanics of unit conversions and the limitations of measured quantities due to uncertainty
* States of Matter
* Structure of atoms
* Bonding and Molecular Structure
* Formulas and Names of Covalent and Ionic Compounds
* The meaning of chemical formulas and balanced chemical equations
* Chemical calculations - stoichiometry, gases & solutions
* Gas Laws
* Solutions - Qualitative and Quantitative
• These topics are covered in Chapters 2-12 in the text.
Necessities:
A scientific calculator will be required, no other electronic device will be allowed for quizzes and exams.
Access to Mastering Chemistry Online Program
http://www.masteringchemistry.com/
An alert state of mind will be most helpful.
A sense of humor will be appreciated by everyone.
PLEASE TURN OFF YOUR CELLULAR PHONES AND PAGERS DURING CLASS. You many not check email, text or surf on the net during lecture.
Expectations:Students are expected to attend every class.
If you are absent from class, regardless of the reason, you will be responsible for the material covered. However, there will be no make up participation activities, or in class quizzes.
Disability Resource Center - If you have a documented disability that may require assistance, you will need to contact DRC for coordination in your academic accommodations. DRC is located in the Reynolds Student Services Complex, Suite 137. The phone number is 702 895-0866 or TDD 702 895-0652. You may also visit their web site at: http://studentlife.unlv.edu/disability/
Class participation and questions will be welcome. However, please be courteous and respectful of others during discussions and question / answer sessions. Inappropriate or rude behavior will not be tolerated.
Policy:
This course will be composed of lectures, online exercises, homework and quizzes assigned through Mastering Chemistry, three – semester exams, and a final exam. See the tentative class calendar.
Generally, quizzes will be worth 10 points each and cover the concepts discussed in class. There will be no make-up quizzes given. The highest ten quiz scores will be used when computing quiz averages, and normalized to 100%, potentially contributing up to 100 points earned toward your semester point total.
Each of the three semester exams [100 points each] may be a mix of multiple choice and work problem questions.
The exam scores and quiz average will contribute up to 400 points [approx. 61.6%] toward your point total.
Points earned for exercises and homework assignments on the Mastering Chemistry website and any homework assignments submitted in class will be totaled and normalized to 100 points [15.4%] and contribute up to 100 points toward your total points earned for the semester.
Example:
Total 260 possible points for Homework.
You accumulate 230 points
(230/260) x 100% = 88.46 points toward your final point total
The topics covered in this course form the foundation for future topics. Thus all of the material is cumulative and each exam may have questions for which you will need to draw upon information covered by previous chapters or exams. The final exam will be worth up to 150 points or 23% and will be cumulative, covering the entire course. You must take the final exam to pass this course.
Your Final Course Grade will be a letter grade (no S/F grade). Your final grade will be based upon [total points earned, 650. Mid Semester grade estimates will be based upon percentages. The following grading scale will be used as a starting point to assign letter grades. The grading scale will never be raised but at my discretion may be lowered (to the advantage of the class) at the end of the semester.
Grade Total Points / % Grade Total Points / %
A 650.0 - 591.5
100 – 91.00
C+ 506.9 - 494.0
77.99 – 76.00
A- 591.4 - 578.5
90.99 - 89.00
C 493.9 - 448.5
75.99 – 69.00
B+ 578.4 - 565.5
88.99 – 87.00
C- 448.4 - 435.5
68.99 – 67.00
B 565.4 - 520.0
86.99 – 80.00
D+ 435.4 - 422.5
66.99 – 65.00
B- 519.9 - 507.0
79.99 – 78.00
D 422.4 - 370.5
64.99 – 57.00
The “15 minute rule” will prevail. If for any reason your instructor cannot make a class or appointment and you have waited 15 minutes, then you may assume that the class or appointment has been cancelled and will be rescheduled at a later time.
You must register in the WebCampus part of the class, because grades, announcements and discussions will be posted on the site. Registering for WebCampus will be covered during the first and second class of the semester.
You must also register in the Mastering Chemistry online program at the following web address: http://www.masteringchemistry.com/
Cellular phones and pagers must be turned to OFF or SILENT while in class.
Tips for Success:
Attend ALL lectures. Take all quizzes and exams.
KEEP UP with the concepts presented in class. Study as often as possible. A typical rule of thumb is to devote at least two hours of study for each hour of lecture. CHEMISTRY IS CUMULATIVE! Don’t be afraid to ask for help. It is available for the asking. Get help ASAP, do not wait until a day or two before an exam to ask for help. Help may not be available at that time.
The purpose of the online problems and homework is to allow you to practice the kinds of questions that will help you gauge your understanding of the concepts covered in lecture. The assigned problems are the minimum number of problems that you should work in order to master the course concepts. You may find that some exam questions may be similar to these problems while some questions will be worded differently, although cover the same topics and concepts.
Check out the textbook web page at http://www.masteringchemistry.com/ .
If possible, study with others outside of class. Form a study group. Working with others can be very helpful if each member of the group takes a turn to explain a concept.
You may find studying with a tutor to be helpful. One on one attention may work better for you than working with a group. You can meet with me and possibly tutors at the Chemistry Department Learning Center in CHE 109
You can also contact the Center for Academic Enrichment and Outreach in the Reynolds Student Services Complex (895-4777), or at their homepage: http://caeo.unlv.edu/tutoring.html for information regarding tutors.
Academic Dishonesty:Cheating will not be tolerated in this course.
http://studentconduct.unlv.edu/.
Lecture:
As stated above, attendance at lectures is essential and expected. You are responsible for all announcements and concepts covered in lecture including information not covered in the textbook or lecture notes, but presented during class lectures. . To get the most out of lecture, read the chapters and/or suggested pages in your text before coming to lecture. There may be pre-lecture quizzes. Study tip: After lecture, read the text again along with your notes and work the relevant end of chapter problems.
Office Hours: Generally 10 am through 2 pm Any time office door is open.
The days and times of office hours are listed on the first page of the syllabus. Although a recitation section is not officially scheduled, you may consider office hours to be a recitation section. Office hours are for your benefit. It is a time where you can seek help, discuss concepts, develop better understanding of topics. In addition to posted office hours, stop by my office and if the door is open, ask if I am available for questions.
Tentative Class Calendar Fall 2014
Week Dates Text Chpt Chapter Titles
1 25-Aug 1 Introduction, Syllabus, iClickers, Element Symbols p 107
27-Aug 2 Measurements
2 1-Sep Labor Day Recess
3-Sep 2 Measurements
3 8-Sep 2 Measurements
10-Sep 3 Matter & Energy
4 15-Sep 3 & 4 Matter & Energy / Atoms & Elements
17-Sep 4 Atoms & Elements
5 22-Sep 5 Electronic Structure & Periodic Trends
24-Sep 5 Electronic Structure & Periodic Trends
6 29-Sep 6 Names and Formulas
1-Oct Exam I Chapters 1, 2, 3, 4, 5
7 6-Oct 6 Names and Formulas
8-Oct 7 Chemical Quantities
8 13-Oct 7 Chemical Quantities
15-Oct 7 & 8 Chemical Quantities & Chemical Reactions
9 20-Oct 8 Chemical Reactions
22-Oct 8 & 9 Chemical Reactions & Chemical Quantities in Reactions
10 27-Oct Exam II Chapters 6, 7, 8
29-Oct 9 Chemical Quantities in Reactions
Chemistry is the study of substances in terms of:
• composition What is it made of?• structure How is it put together?• propertiesWhat characteristics does it have?• reactions How does it behave with
other substances?
Branches of Chemistry
The field of chemistry is divided into branches such as
•general chemistry
•organic chemistry
•biochemistry
•geochemistry
•physical chemistry
•analytical chemistry
•environmental chemistry
What are stubstances made of? Matter.
Matter is anything that has mass and takes up space.
Matter has both physical and chemical properties
Physical properties are:
Characteristics observed or measured without changing the identity of a substance.
Shape, physical state, odor, boiling and freezing points, density, and color of that substance.
Chemical properties describe the ability of a substance
To interact with other substances, and/or
To change into a new substance.
Physical Properties of Copper
Copper has physical properties:
• Reddish-orange
• Very shiny
• Excellent conductor of heat and electricity
• Solid at 25C• Melting point 1083C• Boiling point 2567C
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
States of Matter
All substances known as matter exist inone of three forms or states:• Solids
Have definite volumes and shapes• Liquids
Have definite volumes, but take the shapes of containers
• GasesHave no definite volumes or shapes
Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings
Chemical Properties
Chemical properties describe the ability of a substance
• To interact with other substances• To change into a new substance
Example:
Iron has the ability to form rust
when exposed to oxygen.Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
Chemistry 103
This course serves as introduction into the world of chemistry, and includes both chemical and physical processes.
Chemistry in Our Lives
Some of the chemicals you may encounter when you cook in the kitchen are
•antioxidants in food
•metal alloys
•plastics
Historical Perspective
• Ancient Greeks and the 4 basic elements:
Air,
Fire,
Water &
Earth.
Historical Perspectives
Alchemists
• Attempted to turn base metals into gold
• Attempted to find the “Elixir of Life”
• Attempted to Produce the “Philosopher’s Stone” (base metals to Gold and immortality)
Faust depicted in an etching by Rembrandt van Rijn (circa 1650).
Scientific Method
The scientific method is the process used by scientists to explain observations in nature, how scientists think.
The scientific method developed out of the methods used by Alchemists.
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
The Scientific Method Involves
• observations, facts obtained by observing and measuring events in nature.
• an hypothesis, statement that explains the observations.
• experiments, procedures that test the hypothesis.
• a theory, model that describes how observations occur using experimental results.
Everyday Scientific Thinking
Observation: Yesterday you went to visit your friend. Soon after you arrived, your eyes began to itch and you started to sneeze. You observed that your friend has a new cat.
Everyday Scientific Thinking
Hypothesis 1: Perhaps you are allergic to cats.
Experiment 1: To test your hypothesis, you leave your friend’s home. •If the itching and sneezing stop, perhaps your hypothesis is correct. •If the itching and sneezing do not stop, perhaps you have a cold.
Everyday Scientific Thinking
Observation: Upon leaving your friend’s home, the itching and sneezing stop.
•The observation supports your original hypothesis. To confirm, you visit another friend with a cat.
Experiment 2: Visiting a second friend with a cat causes your eyes to itch and you begin to sneeze again, further supporting your hypothesis.
Theory: The experimental results indicate that indeed you are allergic to cats.
Periodic Table
Primary resource for a chemist as well as other scientists.
Lists all the known elements in a “periodic way”
Element - a substance that can not be broken down into simpler substances by chemical means.
Periodic Table
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
Symbols for the Elements
The language of Chemistry• H Hydrogen• O Oxygen• Ag Silver• Au Gold• Hg Mercury• He Helium• Na Sodium
These are the elements and their symbols which you will need to memorize.
See page 107 in your text, 95 in older editions.
http://www.youtube.com/watch?v=zGM-wSKFBpo
Review the following slides on your own.
Supplement: Chapter 1 Chemistry in Our Lives
Learning Chemistry
1.3 Learning Chemistry: A Study Plan
Learning Goal Develop a study plan for learning chemistry.
© 2014 Pearson Education, Inc.
Students discuss a chemistry problem with their professor during office hours.
Text Features for Learning
© 2014 Pearson Education, Inc.
Using the study features in the text will help you prepare for class and exams.
Looking Ahead outlines the chapter topics.
Glossary and Index lists and defines key terms in the chapter.
Key Math Skills needed for the chapter are reviewed.
Text Features for Learning
Core Chemistry Skills are indicated by icons in the margin and summarized at the end of each chapter.
Chapter Readiness highlight the Key Math Skills and Core Chemistry Skills needed in the current chapter.
Features to Help You Study
• Before reading the chapter, review the topics in Looking Ahead.
• Read the Concept Checks; they help you to understand the key ideas.
• Work through the Sample Problems and compare your solution to the one provided.
• Chemistry Links to Health, to History, to Industry, and to the Environment connect the chemical concepts you are learning to real-life situations.
Features to Help You Study
At the end of the chapter are study aids, including
•Chapter Reviews
•Concept Maps
•Key Terms
•Understanding the Concepts
Features to Help You Study
• Additional Questions and Problems and Challenge Problems
• Key Math Skills
• Core Chemistry Skills
• Combining Ideas reviews concepts from three to four chapters.
Questions and Problems
Questions and Problems placed after each section are written to help you understand the material and give immediate applications of new ideas.
An Analyze the Problem feature shows how to organize the data in the word problems to obtain the solution.
MasteringChemistry: the online program for exercises / homework and quizzes.
Questions and Problems
Understanding the Concepts, Additional Questions and Problems, and Challenge Questions give you more practice in understanding concepts and problem solving.
Answers placed at the end of each chapter give feedback to odd-numbered questions.
Active Learning
Active participation while reading the text will help you learn the material more quickly and with more understanding.
Steps in Active Learning
Make a Study Plan
Consider some of these ideas when making a plan on how to approach your studying and learning in chemistry.
___ reading the chapter before lecture___ going to lecture___ reviewing the learning goals___ keeping a problem notebook
Make a Study Plan
___ reading the text as an active learner___ working the Questions and Problems
that follow each section___ being an active learner in lectures___ organizing a study group___ seeing the professor during office hours
Make a Study Plan
___
___ ___ ___
reviewing Key Math Skills and CoreChemistry Skillsattending review sessionsorganizing my own review sessionstudying as often as possible
Learning Check
Which activity would be part of a successful study plan?
A.staying out late the night before an exam
B.reading the text before class
C.working problems with a study group
D.skipping the lecture one or two times a week
E.discussing a problem with the instructor