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Instructional Video

National Science Foundation: Secret Writing

Curated by ACT

A demonstration of how to write a reversible secret message using goldenrod colored paper, a candle, and ammonia-based window cleaner. [1:58]

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Concepts
acids and bases
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Additional Tags
acid-base reaction, invisible message, secret message, nsf, national science foundation, science 360, science 360: secret writing, chemistry lab experiments
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Classroom Considerations
  • Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional