Grade 9 Chemistry
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Grade 9 Science Experiment 10 - How to Create your Own Invisible Ink Messages and Secret Codes



Buy ALL 5 Grade 9 Chemistry Projects for only $1.00:


Read This Before Placing your Order:


  • This is a downloadable e-book program.

  • You will NOT receive a physical package shipped to you in the mail.

  • Once you have made your payment via PayPal, select the option to return to this website

  • You will be returned to the download page where you can immediately download all 5 projects and get started right away.

  • This program is NOT available in stores, so you can only access it through this website.


If anything goes wrong with your purchase, and you did not get to the download page, please contact me and I'll email you the download link (this could take up to 24 hours)


Purpose: 


The purpose of this science fair project is to understand how the properties of lemon juice reacts with heat.  The acids, sugars, and other chemicals in dried lemon juice will turn brown when placed in front of a heat source.  Chromatography will also be explored.  Chromatography is the process of spotting a chemical on an absorbent material and dipping an edge of the material in liquid which reveals a spot that separates into colored spots.  Use chromatography to create a secret code.


Hypothesis: 


You can write and reveal invisible messages using lemon juice.  Secret codes can be created based on chromatography results.


Variables:


  • Amount of lemon juice
  • Color of pens and markers
  • Chromatography dip source (water, salt water, and rubbing alcohol)

Materials Needed:


Science fair project #1:


  • Lemon juice
  • Small paintbrush
  • White writing paper
  • 3-oz Paper cup
  • Black ink pen

Science fair project #2:


  • Pens and markers in a variety of colors
  • Paper towel
  • Three small dinner plates
  • Water
  • Salt
  • Rubbing alcohol

Buy ALL 5 Grade 9 Chemistry Projects for only $1.00:


Read This Before Placing your Order:


  • This is a downloadable e-book program.

  • You will NOT receive a physical package shipped to you in the mail.

  • Once you have made your payment via PayPal, select the option to return to this website

  • You will be returned to the download page where you can immediately download all 5 projects and get started right away.

  • This program is NOT available in stores, so you can only access it through this website.


If anything goes wrong with your purchase, and you did not get to the download page, please contact me and I'll email you the download link (this could take up to 24 hours)