The German army used chlorine gas as chemical warfare in WWI. The 17th video in a series of 118 about chemical elements discusses the element chlorine. It introduces basic facts and some fascinating experiments proving the dangers associated with chlorine.

Concepts

chlorine, the periodic table, chemical elements

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Additional Tags

science

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Instructional Ideas

• Discuss the use of chlorine in war
• Describe the importance of chlorinated swimming pools

Classroom Considerations

• Consider the maturity of pupils, as it discusses chemical warfare and adultery

• This video is hosted on YouTube

Pros

• Provides subtitles in English, French, and Portuguese for ELLs
• Shares experiments too dangerous to perform in most classrooms

Cons

• None

Common Core

SL.9-10.2 SL.11-12.2 RST.9-10.4 RST.11-12.4