课程信息
4.8
212 个评分
61 个审阅
100% 在线

100% 在线

立即开始,按照自己的计划学习。
可灵活调整截止日期

可灵活调整截止日期

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初级

初级

完成时间(小时)

完成时间大约为30 小时

建议:6 hours/week...
可选语言

英语(English)

字幕:英语(English), 西班牙语(Spanish), 希伯来语
100% 在线

100% 在线

立即开始,按照自己的计划学习。
可灵活调整截止日期

可灵活调整截止日期

根据您的日程表重置截止日期。
初级

初级

完成时间(小时)

完成时间大约为30 小时

建议:6 hours/week...
可选语言

英语(English)

字幕:英语(English), 西班牙语(Spanish), 希伯来语

教学大纲 - 您将从这门课程中学到什么

1
完成时间(小时)
完成时间为 4 小时

Introduction

<p>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. </p><p>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!</p><p>Prof. Canelas</p> ...
Reading
12 个视频 (总计 133 分钟), 2 个阅读材料, 2 个测验
Video12 个视频
Scientific Method9分钟
Measurement and Significant Figures Part I16分钟
Measurement and Significant Figures Part II13分钟
Matter17分钟
Energy Part I14分钟
Energy Part II14分钟
Intro Stoichiometry Part I - Chemical Formulas12分钟
Intro Stoichiometry Part II - The Mole13分钟
[DEMO] Dr. Ken Lyle Chemistry Demonstration6分钟
[DEMO] Physical Change3分钟
[DEMO] Chemical Change4分钟
Reading2 个阅读材料
Math Concept Quiz Instructions10分钟
Significant Figure Tips10分钟
Quiz2 个练习
Math Concept Quiz30分钟
Week 1 Exercises30分钟
2
完成时间(小时)
完成时间为 5 小时

Matter and Energy

<p>If you are interested in significant figures in more detail, here are some <a href="https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/sig-figs-pre-alg/v/significant-figures" target="_blank">good videos</a> to follow on Khan Academy.</p><p>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.</p>...
Reading
9 个视频 (总计 183 分钟), 2 个测验
Video9 个视频
The Structure of the Periodic Table27分钟
Ions and Isotopes23分钟
Ionic Bonds17分钟
Orbital Energy and Ionization Energy Part I22分钟
Orbital Energy and Ionization Energy Part II14分钟
Electronegativity and Atomic Radius23分钟
Introduction to Thermochemistry: Heat Capacity19分钟
[DEMO] Density6分钟
Quiz2 个练习
Week 2 Exercises24分钟
Advanced Problem Set46分钟
3
完成时间(小时)
完成时间为 2 小时

Compounds

<p>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!</p><p>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!</p>...
Reading
7 个视频 (总计 99 分钟), 1 个测验
Video7 个视频
Oxidation States Part II - Examples13分钟
Naming Ionic Compound Part I13分钟
Naming Ionic Compound Part II12分钟
Covalent Bond Formation19分钟
Naming Molecular Compounds12分钟
Formula Mass9分钟
Quiz1 个练习
Week 3 Exercises22分钟
4
完成时间(小时)
完成时间为 3 小时

Chemical Composition and Reactions

<p>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.</p><p>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.</p>...
Reading
7 个视频 (总计 106 分钟), 2 个测验
Video7 个视频
Chemical Composition: Mole Ratios18分钟
Mass Percent9分钟
Empirical Formula19分钟
Introduction to Chemical Reaction11分钟
Balancing Chemical Reaction Equations15分钟
Chemical Reaction Calculations15分钟
Quiz2 个练习
Week 4 Exercises18分钟
Advanced Problem Set40分钟
4.8
61 个审阅Chevron Right
职业方向

33%

完成这些课程后已开始新的职业生涯
工作福利

12%

通过此课程获得实实在在的工作福利

热门审阅

创建者 DPFeb 6th 2018

Great Beginner Course. There are some parts where there will be frustration, but the forums are helpful. Any type of class involving math and science involves practice and work. Professor is great!

创建者 PFNov 24th 2016

A very good course to review basic college chemistry, or to prepare for for taking a college course if High School chemistry was taken too long ago. Highly recommended!

讲师

Avatar

Prof. Dorian A. Canelas

Assistant Professor of the Practice
Chemistry

关于 杜克大学

Duke University has about 13,000 undergraduate and graduate students and a world-class faculty helping to expand the frontiers of knowledge. The university has a strong commitment to applying knowledge in service to society, both near its North Carolina campus and around the world....

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