Class Central

Rankings
Career Certificates

Subjects

View all

Technology
Business
Creative
STEM
Health & Wellness
People & Society
Personal Growth & Lifestyle

View all Subjects

Universities
The Report

Courses from 1000+ universities

Rankings

Best Courses

Best of All Time
Best of the Year

Most Popular Courses

Most Popular of All Time
Most Popular of the Year

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
View all Career Certificates

Technology

Computer Science
Artificial Intelligence
Data Science
Web Development
Programming
Databases
IT & Networking
DevOps
UX/UI Design
Blockchain & Cryptocurrency
Extended Reality (XR)
Generative AI
Cloud Computing
Cybersecurity
Game Development
Product Management
View all Technology

Business

Management & Leadership
Finance
Entrepreneurship
Marketing
Strategic Management
Project Management
Sales
Business Software
Real Estate
Professional Development
Accounting
Supply Chain Management
Business Strategy
Human Resources
View all Business

Creative

Music
Digital Media
Visual Arts
Design
Crafts
Performing Arts
AI Art
View all Creative

STEM

Mathematics
Engineering
Science
Statistics & Probability
Chemistry
Physics
Environmental Science
Astronomy
Biology
Agriculture
View all STEM

Health & Wellness

Disease & Disorders
Public Health
Health Care
Nursing
Mental Health
Continuing Medical Education (CME)
Medicine
Wellness
Nutrition
View all Health & Wellness

People & Society

Humanities
Education & Teaching
Social Sciences
History
Literature
Sociology
Economics
Psychology
Anthropology
Political Science
Law
Language Learning
Writing
Philosophy
Religion
View all People & Society

Personal Growth & Lifestyle

Personal Development
Sports & Recreation
Personal Finance
Parenting & Family
Food & Drink
Self-Defense & Martial Arts
Gardening
Productivity & Time Management
Games
Study Skills
Travel
Pets & Pet Care
Beauty & Makeup
Home & Living
Critical Thinking
View all Personal Growth & Lifestyle

Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

Dhawal Shah Sep 03, 2026

Latest

[2026] 17% of Coursera Courses Have Peer Reviews: Here Are the Best
7 Best Online First Aid Courses and Sites for 2026: CPR, AED, and Emergency Response
7 Best Node.js Courses in 2026: Build APIs in JavaScript
12 Best Data Analysis Courses for 2026: From Data to Insights
Coursera’s Hidden Free-Access Courses (and What’s Actually Free About Them)

Write for The Report

Visit The Report

600 Free Google Certifications
Trending

Most common

Popular subjects

Artificial Intelligence
17,507 courses
Data Science
11,440 courses
Cybersecurity
14,270 courses

Popular courses

L'Italiano nel mondo
University of Naples Federico II
Introduction to HTML5
University of Michigan
Umano Digitale
University of Urbino

Organize and share your learning with Class Central Lists.

View our Lists Showcase

Sign up

Log in or Sign up

Log in
Sign up

Subjects
STEM
Chemistry
Environmental Chemistry

Free Online

Environmental Chemistry Courses and Certifications

Learn Environmental Chemistry, earn certificates with free online courses from Yale, The Open University, IIT Madras and other top universities around the world. Read reviews to decide if a class is right for you.

44 courses

Explore Subjects

Environmental Chemistry topics

Water Chemistry
Green Chemistry
Atmospheric Chemistry

More in Chemistry

Physical Chemistry
General Chemistry
Analytical Chemistry
Organic Chemistry
Computational Chemistry
Inorganic Chemistry
Drug Development
Nuclear Chemistry
Drug Discovery
Medicinal Chemistry
Polymers
Supramolecular Chemistry
Chemical Biology
Phytochemistry
Explosives
Forensic Chemistry

Learners also browse

Spectroscopy
Environmental Policy
Climate Science
Hydrology
Soil Science

Showing 44 courses

Sort by Relevancy

Filter by

Filters

1. Free course (41)
2. With certificate (14)
3. From universities (28)
Level
1. Beginner (17)
2. Intermediate (22)
3. Advanced (4)
Duration
1. < 30 mins (3)
2. 30 - 60 mins (3)
3. 1 - 2 hours (1)
4. 2 - 5 hours (1)
5. 5 - 10 hours (3)
6. 10+ hours (6)
Language
1. English (21)
2. Chinese (16)
3. French (4)
4. Spanish (2)

IIT Roorkee; NPTEL
Environmental Chemistry

Applies equilibrium, kinetics, thermodynamics, and aqueous chemistry to analyze chemical processes in environmental systems.
- Swayam
- 12 weeks
- Available until Oct 9, 2026
- Free Online Course
Indonesia Cyber Education Institute
Environmental Chemistry

Analyze global environmental issues through air, water, and soil pollution, including microplastics and emerging pollutants.
- XuetangX
- Self-Paced
- Free Online Course
环境监测


系统学习水、气、固废与土壤等环境介质的监测方法，并通过污染物测定实验掌握环境监测实践。
- XuetangX
- Self-Paced
- Free Online Course
Qufu Normal University
环境化学


正确认识复杂环境问题中化学污染物对健康与安全的影响，深入理解环境保护和社会可持续发展的内涵和意义，激发“保护环境，人人有责”的社会责任感。
- XuetangX
- Self-Paced
- Free Online Course
环境监测


环境科学专业的必修课程，是建设美丽中国的必修理论和实践知识储备站
- XuetangX
- Self-Paced
- Free Online Course
环境有机污染化学


系统讲授有机污染物在环境中的迁移、转化、降解、毒性、痕量检测及水文生态效应。
- XuetangX
- Self-Paced
- Free Online Course
环境分析化学


学习水分析、土壤分析、大气分析和复杂环境样品中痕量污染物分析，助力打好蓝天、碧水、净土保卫战，努力打造青山常在、绿水长流、空气常新的美丽中国。
- XuetangX
- Self-Paced
- Free Online Course
环境监测


走进课堂，你将从环境监测的繁枝密叶中快速摘得果实；走出课堂，你将是环境样品采集、分析的实验师，环境数据统计、处理的分析师，在线环境监测系统的管理者，并终将会成为优秀的环境专业人才！
- XuetangX
- Self-Paced
- Free Online Course
环境污染化学


课程学习有害化学物质在环境介质中的存在、特性、行为和效应及控制的化学原理，为从事环境保护和环境科学研究奠定坚实的基础，是高素质环境科学创新人才培养的必备课程。
- XuetangX
- Self-Paced
- Free Online Course
Introduction to Green Chemistry - Toxicology - Module 3
2 ratings

Discover toxicology fundamentals and molecular hazard basis to design safer chemicals with reduced environmental impact through green chemistry principles.
- YouTube
- 49 minutes
- Self-Paced
- Free Video
What chemical compounds might be present in drinking water?
5 ratings at OpenLearn

Do you want to know what’s in the water that you drink? This free course, What chemical compounds might be present in drinking water?, examines the chemical compounds that occur in drinking water. ...
- OpenLearn
- 6 hours
- Self-Paced
- Free Certificate
Sustainable chemistry
3 ratings at OpenLearn

Explore how chemists support the UN Sustainable Development Goals: calculate atom economy, apply green chemistry principles, examine the Haber-Bosch process and elements at risk in mobile phones.
- OpenLearn
- 4 hours
- Self-Paced
- Free Certificate
Industrial Chemistry for Circular and Bio Economy

Learn how to increase the environmental sustainability by reducing the impact and ensuring a sustainable growth based on Circular and Bio economy
- Federica
- Self-Paced
- Free Online Course
Atmospheric Research Infrastructures: Sharing the future of our atmosphere

Air pollution and climate change are two critical issues. In this MOOC, scientists will outline the workflow of atmospheric Research Infrastructures, by exploring ACTRIS, IAGOS and ICOS.
- France Université Numerique
- 5 hours
- Self-Paced
- Free Online Course
The Ozone Layer - Stratospheric Protection and Environmental Impact

Explore how stratospheric ozone forms, shields Earth from ultraviolet radiation, is depleted by CFCs, and is protected through the Montreal Protocol.
- YouTube
- 41 minutes
- Self-Paced
- Free Video

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
All Subjects

Coursera
Udemy
Noble Desktop
Simplilearn
CodeSignal
Boot.dev
All Universities

The Report by Class Central RSS Feed

Series Finale of Online Education
Udemy Earns More, Pays Less
Duolingo's 2026 Strategy
1000s of Free Certificates
Best Courses Guides
Best of All Time
Most Popular of All Time

About Class Central

Class Central aggregates courses from many providers to help you find the best courses on almost any subject, wherever they exist.

Facebook
Twitter
LinkedIn
YouTube
Bluesky

Class Central © 2011-2026 Privacy Policy

About Us
Join Us
Write for Us
Help Center
Contact Us

Share

Facebook
Twitter
Bluesky
Email

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free

Someone learning on their laptop while sitting on the floor.