Chemistry President's day Invisible Ink Washington History or Science activity
The Lesson Pony
109 Followers
Grade Levels
8th - 10th, Homeschool
Subjects
Resource Type
Standards
NGSSMS-PS1-2
Formats Included
- Word Document File
Pages
4 pages
The Lesson Pony
109 Followers
Description
Teach physical and chemical change thru the science of "steganography" in this easy-to-implement yet highly engaging lab. No chemistry experience is required. However, this lab is a great addition to working with your history department to make the Revolutionary War come alive. George Washington used this technique to send coded messages throughout the war. Students will discover that the juice of lemons contains carbon which will enable them to write a secret message in the same manner as the Continental Army did in the 1770s.
MATERIALS
½ Lemon
Saucer
Water
Teaspoon
Cotton swab
White paper
Lamp (any heat source)
Total Pages
4 pages
Answer Key
Included
Teaching Duration
45 minutes
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Standards
to see state-specific standards (only available in the US).
NGSSMS-PS1-2
Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred. Examples of reactions could include burning sugar or steel wool, fat reacting with sodium hydroxide, and mixing zinc with hydrogen chloride. Assessment is limited to analysis of the following properties: density, melting point, boiling point, solubility, flammability, and odor.
Reviews
Questions & Answers
109 Followers
