Скачать или смотреть Chemical Changes & Conservation of Matter

Essential Science for Teachers: Physical Science – Episode 4
Title: Chemical Changes and Conservation of Matter

What happens when two clear liquids mix and form a milky-white solid? Why does iron rust? Where do elements come from?

In this episode, educators and viewers:
✅ Explore chemical changes using the particle model
✅ Learn how matter is conserved during chemical reactions
✅ Understand atomic and molecular transformations
✅ Discover contributions from early chemical pioneers

This K–6 teacher professional development video uses classroom examples, expert interviews, and vivid animations to explain the conservation of matter — even at the atomic scale.

Produced by: Harvard-Smithsonian Center for Astrophysics (2004)
Fair Use Disclaimer: Uploaded under Section 107 of the Copyright Act 1976. Intended for nonprofit educational use — including teaching, research, and scholarship.

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