课程概况
化学入门级课程，专为没有化学基础或化学知识有限的学生设计，侧重于解决与化学有关的问题，旨在为众多自然科学、卫生和政策学专业的学生进一步研究化学问题奠定基础；课程主要介绍化学的一些基本概念，其中包括：原子、分子、离子、元素周期表、化学计量、化学反应、键合、热化学和气体定律。
每周课程包含简短的教学视频，并附带随堂互动练习，习题分为两类，基础练习直接与视频内容挂钩，而扩展练习则需要学生运用综合思维和自身的数学能力。凡顺利完成本课程，且基础练习、书面报告和期末考试平均成绩在70分以上的学生，均可获得由授课老师签发的合格证书；顺利完成本课程，且基础练习、扩展练习，书面报告和期末考试平均成绩在85分以上的学生，可获得由授课老师签发的优秀证书。
This is an introductory course for students with limited background in chemistry; basic concepts involved in chemical reactions, stoichiometry, the periodic table, periodic trends, nomenclature, and chemical problem solving will be emphasized with the goal of preparing students for further study in chemistry as needed for many science, health, and policy professions..
Over the seven weeks of Introduction to Chemistry: Reactions and Ratios, you will be able to progress from a most basic knowledge of matter and energy to solving interesting real world chemical reaction stoichiometry problems. Each lesson in the course introduces some new concepts that allow you to build upon the material from previous lessons, so completing the coursework in the order that it is delivered will be most beneficial for developing a thorough understanding of synthesized information. This course is intended for students with very little background in the subject, but a strong foundation in algebra is needed to solve some of the problems.
In the first unit, the course will first introduce the basic concepts of scientific methods and measurement. Then we will talk about matter, energy, and stoichiometry. Last, we prepared several lab demonstrations by Dr. Ken Lyle. I hope that you are as excited as I am to this amazing world of chemistry! Good luck!
课程大纲
周1
完成时间为 4 小时
Introduction
Over the seven weeks of Introduction to Chemistry: Reactions and Ratios, you will be able to progress from a most basic knowledge of matter and energy to solving interesting real world chemical reaction stoichiometry problems. Each lesson in the course introduces some new concepts that allow you to build upon the material from previous lessons, so completing the coursework in the order that it is delivered will be most beneficial for developing a thorough understanding of synthesized information. This course is intended for students with very little background in the subject, but a strong foundation in algebra is needed to solve some of the problems.
In the first unit, the course will first introduce the basic concepts of scientific methods and measurement. Then we will talk about matter, energy, and stoichiometry. Last, we prepared several lab demonstrations by Dr. Ken Lyle. I hope that you are as excited as I am to this amazing world of chemistry! Good luck!
12 个视频 （总计 133 分钟）, 2 个阅读材料, 2 个测验
周2
完成时间为 5 小时
Matter and Energy
If you are interested in significant figures in more detail, here are some good videos to follow on Khan Academy.
This week we will continue our explorations of matter and energy. We will discuss the sub-atomic particles that govern chemical reactions, isotopes, anions, and cations. We will learn how to name compounds, calculate formula masses, convert between grams and moles, examine periodic trends, and more! An advanced problems set is posted now; that is a longer assignment and is optional unless you would like to be eligible for the Honor’s Track. You can still earn a regular verified certificate without completing the advanced problem sets, so please be sure to keep working on the normal weekly exercises.
9 个视频 （总计 183 分钟）, 2 个测验
周3
完成时间为 2 小时
Compounds
In this week's videos and exercises (aka quizzes), we will learn how to name compounds, calculate formula masses, convert between grams and moles, examine periodic trends, and more!
I hope you enjoyed the last two weeks of learning chemistry. Great work on watching videos, posting on the discussion forum and submitting your exercises!
7 个视频 （总计 99 分钟）, 1 个测验
周4
完成时间为 3 小时
Chemical Composition and Reactions
Week 4 for Introduction to Chemistry: Reactions and Ratios is about to begin! This week will be filled with introductions to chemical compositions, chemical reaction terminology, and reaction calculations.
If any of the following questions interest you, then watching this week's videos and doing some practice problems are probably a good way to get started! How much sodium is in my diet? What amount of pollutants are in drinking water? How much iron is in iron ore for steel production? These of the types of problems you will be able to address this week.
7 个视频 （总计 106 分钟）, 2 个测验
周5
完成时间为 2 小时
Solutions and Solubility Rules
In the past five weeks of the course, we have learned concepts, rules, and skills, including but not limited to: the definitions of atoms, elements, molecules, and compounds; energy changes; Coulomb’s Law, molecular stoichiometry; atomic structures; periodic trends; the mole; compounds; atomic and molecular masses; molecular stoichiometry; balancing chemical equations.
In this coming week, we will be discussing aqueous solutions, solubility rules, precipitations and electrolytes! We are also going to learn the first type of chemical reaction equation in this course: Dissolutions.
9 个视频 （总计 116 分钟）, 1 个测验
周6
完成时间为 2 小时
Acid-base and Redox Reactions
We are almost at the end of our course! I hope this has been a rewarding experience for you because I know that the course is not an easy one and it is relatively long. So kudos to everyone who has made it this far!
Week 6 for Introduction to Chemistry: Reactions and Ratios will include very basic introductions to acid-base and redox reactions. We will also practice combining what we know from previous weeks to complete reaction calculations.
6 个视频 （总计 79 分钟）, 2 个测验
周7
完成时间为 1 小时
Final Exam
Congratulations on making through to the final week of the course! It was not an easy journey for the past six weeks with dozens of videos, exercises, problem sets, and forum discussions. Kudos to the many of you who completed the honors lessons on top of the other work. I am proud of all of you!
预备知识
学生应具备高中代数水平，对化学课程拥有浓厚兴趣和学习热情。
参考资料
阅读任意一本大学化学基础教材的相关内容，都会对学习有所帮助，我们推荐由尼瓦尔多· 罗编写的《Introduction to Chemistry: Essentials》（《化学入门：基础知识》），但不作特定要求，同学们可随意选择。
