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ACS/NSTA Web Seminars:

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Physical Changes, Chemical Changes, and How to Tell the Difference

All web seminar participants use online tools that allow them to mark-up presenter's slides or share desktop applications in addition to engaging in chat with others online and answering poll questions


This web seminar took place on December 5, 2012, from 6:30 p.m. to 8:00 p.m. Eastern Time. The presenter was Adam M. Boyd from the Office of K–8 Science at the American Chemical Society (ACS). In this program Mr. Boyd shared strategies for teaching about physical changes and chemical changes, and he talked about related resources included in an ACS activity kit celebrating the international year of chemistry.

The PowerPoint, related resources from the NSTA Learning Center, and web links from the presentation are now contained in the above resource collection. Clicking on the collection link will place it in your Learning Center, My Library, neatly organized under the My Resource Collections tab.


During this web seminar Mr. Boyd introduced participating educators to a kit developed by ACS for the international year of chemistry that includes lessons, demonstrations, student activity sheets, and discussion ideas. Mr. Boyd provided a close-up look at the featured concept from the kit: how to tell the difference between chemical changes and physical changes. He shared teacher demos, investigation activities, and extensions that can help students gain a real-world understanding of the key distinctions between the two types of change. Participants watched video clips and discussed their own ideas for implementing the lessons in the classroom.


Seminar participants received an NSTA SciGuide. A certificate of attendance was deposited into participants' My PD Record and Certificates area in the NSTA Learning Center for completing the evaluation form at the end of the program.


Here are some comments provided by the participants at the end of the Web Seminar:

  • “This was an excellent, worthwhile session. Very good! It refreshed my memory about some important concepts.”
  • “I love being pointed to related resources and follow up activities that look like they are pretty simple to implement, but appropriate for my 7th graders.”
  • “Thoroughly enjoyed the webinar and the ability to interact with the presentation screen.”

Thanks to the participants and the presenter for the learning opportunity, the interactions, and a job well done!


See when other American Chemical Society (ACS) Web Seminars are scheduled.




For more information contact webseminars@nsta.org


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Underwritten by American Chemical Society