Week III. 9/17/2018. Stoichiometry

Reading:  Chapter 3.

Homework:  Please see Mastering Chemistry

Lecture Outline:

Balancing Chemical Equations
Formula and Molecular Weights
The Mole and Molar Mass
Molecular and Empirical Formulas
Using Balanced Equations and Limiting Reagents


For nomenclature help enter the chemical formula or name into your browser search field., air bag demo,

Week 3: CH141 B Schedule

Chemical reactions!  They are all around us and critical for life and our environment!  This week we will dive into chemical reactions and practice a lot with quantitative problem solving and chemical nomenclature.

Make note that HW#2 is due Wednesday night.  If you have any questions related to the course syllabus, please come see me during office hours by Wednesday.

Lecture Materials for Monday:Lecture Slides 9-17Lecture Outline 9_17Class Notes 9-17

Additional Practice with Nomenclature:Nomenclature Practice

Lecture Materials for Wednesday: Lecture Slides 9-19, Lecture Outline from 9_19

Week 3 Sat 9/15, Sun 9/16 Mon 9/17 Tue 9/18 Wed 9/19 Thu 9/20 Fri 9/21
In Class Chap. 2 and 3 Chapter 3 Chapter 3
Learning Objs. Translate between chemical nomenclature and equations for chemical reactions. Do quantitative problem solving using balanced chemical reactions. Do quantitative problem solving using limiting reagents.
Topic Nomenclature and Chemical Reactions Stoichiometry Stoichiometry and Limiting Reagents
Activities Decomposition of Hydrogen Peroxide Precipation of Lead Iodide Limiting reagent with acetic acid and sodium bicarbonate
Outside of Class
Homework Work on HW #2 ***Homework #2 is due at 11:59pm *** Start HW#3
Reading 1st Read of Chap 3 2nd read of Chap 3
Other Things to Remember Office Hours: 2:30-4:00 Keyes 314 Office Hours: 1:00-2:30 Keyes 314
Additional Practice Problems 2.37, 2.43, 2.47, 2.49, 2.55 2.67, 2.77, 2.73, 3.11, 3.13 3.19, 3.33, 3.39, 3.51, 3.57 3.71, 3.75, 3.77, 3.97

Can mRNA disrupt the drug industry?

Used by all living things to make proteins, messenger RNA is one of the least explored frontiers of drug discovery. Moderna Therapeutics, and an increasing number of similarly well-funded biotech firms, is built on the promise that mRNA can be turned into a powerful treatment for genetic diseases, cancer, infectious diseases, and more. But turning mRNA into a drug is far from trivial, and companies have kept their technology largely under wraps. Now, Moderna is offering a glimpse of its massive research engine. Read on to learn how researchers are trying to move mRNA out of the lab and into the clinic.  – Read more.

Reference: Chemical & Engineering News, SEPTEMBER 3, 2018 | APPEARED IN VOLUME 96, ISSUE 35

Resources:  This video was also posted by the American Chemical Society…


Week II: 9/10/2018

News:  Laboratory starts this week.   Please use the laboratory link to read prelab materials.

Reading: Chapter II

Lecture Outline for Chapter II:

Atomic Theory
Atomic Structure
Atomic Weights
The Periodic Table
Molecules and Ions

King Lecture Resources: Chapter II Figures,  Atomic Force Microscopy,  big-bangNomenclature


Week 2: Chem 141 B Schedule

Here is our schedule for the week of 9/8 to 9/14.

Note: Assignments are due on Sunday and Monday evenings at midnight.  Check Mastering Chemistry for more details!

Monday Lecture Materials: Ch141_9-10-2018-slideshowLecture Outline 9-10-2018Class notes 9-10

Wednesday Lecture Materials: Ch141_9-12-2018-slideshowLecture Outline 9-12-2018Class-Notes-9-12

Friday Lecture Materials: Ch141_9-14-2018-slideshowLecture Notes 9-14Class notes 9-14

Lecture slides and notes will be posted here throughout the week.

Week 2 Sat 9/8, Sun 9/9 Mon 9/10 Tue 9/11 Wed 9/12 Thu 9/13 Fri 9/14
In Class Chapter 2 Chapter 2 Chapter 2
Learning Objs. To understand the basic structure of the atom and its subatomic particles. Quantitative problem solving. Relate the organization of the periodic table to properties. To learn to communicate using the nomenclature used by chemists
Topic Atoms, Molecules, and Ions Atoms, Molecules, and Ions Atoms, Molecules, and Ions
Activities Warm-up, Build scaled-up model of an H atom Think-Pair-Share quantative practice problems, Cathode Ray Tube Self assessment of study strategies
Outside of Class
Homework ***Colby Chemistry Assessment (Diagnostic Quiz) on Mastering Chemistry is Due at 11:59*** ***Introduction to Mastering Chemistry is due at 11:59*** Start HW #2 Work on HW #2
Reading 1st Read of Chap 2 2nd read of Chap 2
Other Things to Remember Lab starts this week! More Information. (Scroll down to table) Office Hours: 2:30-4:00 Keyes 314 Office Hours: 1:00-2:30 Keyes 314
Practice Problems 1.13, 1.15, 1.23, 1.29, 1.39, 1.60 1.47, 2.13, 2.19 2.15, 2.29, 2.41 2.47 2.65, 2.67, 2.77, 2.83

Eric Roy – A Colby Environmental Rockstar!

Read More about Hydroviv, a water treatment company making a difference for the people of Flint and consumers across the USA (https://www.hydroviv.com/blogs/water-smarts/)

Week 1: Welcome to Chem 141 B!

Here is our schedule for the first week for the 10 am section (141B).

Note: There is nothing due this week but you should do two things as soon as possible:

1) register for Mastering Chemistry

2) review the syllabus this week and reach out if you have any questions or issues.

Friendly reminder: I have office hours in Keyes 314 from 2:30 to 4:00 pm on Wed. and 1-2:30 on Fri. Come say hi!

Slide Show from Class: Ch141_Day1

Slide Show from Friday’s Class: Updated-Ch141_9-7-2018-slidesClass Notes: Measurement Chap 1

Week 1 Sat 9/1 Sun 9/2 Mon 9/3 Tue 9/4 Wed 9/5 Thu 9/6 Fri 9/7
In Class First day of class! Chapter 1
Topic Syllabus. Study Strategies. Classification and Properties of Matter. Matter and Measurement
Activities Lecture, Minute paper Think-pair-share, in class practice problems
Outside of Class
Homework HW#1: Introduction to MasteringChemistry
Reading 1st read of Chap 1 Read the Syllabus
Tasks Sign up for Mastering Chemistry  Complete Colby Chemistry Assessment (on MasteringChemistry)
Practice Problems 1.13, 1.15, 1.23 1.29, 1.39, 1.47, 1.60


CH141 General Resources

Mastering Chemistry Homework Website.  (CH1412018)

Instructions  Get Started withMastering Chemistry 2018

Mastering Chemistry Support Page.

Molecule Viewer

Innovation requires the application of chemical basics to produce new technologies:  Corning Gorilla Glass, Tesla Powerwall.   We are interested in producing the next generation of innovators.

Week I. 9/5/2018

Welcome to General Chemistry at Colby College.   We will use this web page to post class related notices and content.

Outline for 9/5/2018

  • Introductions
  • General class policies:  Syllabus, textbook, homework, exams, laboratory
  • Use of electronic resources
  • Strategies for doing well in chemistry
  • Chapter 1: Matter and Measurement

Lecture Slides:

CH141 – Summer Update – 2018