�й�365bet��Ĺ��

Skip to Main Content

ACS

< Back

Meetings & Events
Meetings & Events

Network with colleagues and access the latest research in your field
View all Meetings & Events

ACS Fall 2025
Washington, D.C. & Virtual
August 17-21, 2025
Careers
Careers

Launch and grow your career with career services and resources
- Get Experience
View all Careers

Explore Career Options
Let ACS help you navigate your career journey with tools, personal coaching and networking.
Students & Educators
Students & Educators

Promoting excellence in science education and outreach
- Middle School Chemistry
- Graduate Students & Postdoctoral Scholars
View all Students & Educators

ACS-Hach Programs
Learn about financial support for future and current high school chemistry teachers.
Communities
Communities

Find a chemistry community of interest and connect on a local and global level.
- High School Club
View all Communities

��䳧��پ��ǲԲ�
Collaborate with scientists in your field of chemistry and stay current in your area of specialization.
Discover Chemistry
Discover Chemistry

Explore the interesting world of science with articles, videos and more.
View all Discover Chemistry

Reactions: Chemistry Science Videos
Uncover the Chemistry in Everyday Life
Funding & Awards
Funding & Awards

Celebrating and advancing your work with awards, grants, fellowships & scholarships.
View all Funding & Awards

ChemLuminary Awards
Recognizing ACS local sections, divisions and other volunteers for their work in promoting chemistry.
About ACS
Membership
greenchemistry
Donate
Volunteer

Membership

You are here:
American Chemical �й�365bet��Ĺ��
Students & Educators
Educational Resources
Undergraduate
Chemistry in Context
Interactives
Ch. 2 | The Air We Breathe
Concentration Conversions

Concentration Conversions

Chemistry in Context December 2, 2019

Facebook LinkedIn X Pinterest Email

Credit: Kim Preshoff/TedEd

This video visualizes relative concentrations.

Related Tags: Properties of Matter

More From This Series

Balancing chemical equations
Components of Air
Are We Breathing Caesar's Last Breath?
Real Talk: James Mack

GET TO KNOW US: About ACS; Press Room; Governance

JOIN US: Member Benefits

GET INVOLVED: Advocate; Volunteer; Donate

Follow Us

1155 Sixteenth Street, NW, Washington, DC 20036, USA | service@acs.org | 1-800-333-9511 (US and Canada) | 614-447-3776 (outside North America)

Top ^
Terms of Use
Security
Privacy
Accessibility
Site Map
Contact
Help

Copyright © 2025 American Chemical �й�365bet��Ĺ��