Dissapearing ink has been used as a fun gag for years. But this seemingly little toy is packed with tons of educational science and chemistry facts! Disappearing ink is an acid-base indicator that changes from colored solution to non-colored solution when it's exposed to air. Spray, squirt, or pour it on an anything and watch as the blue stained "ink" dissapears right before your eyes.

What you'll get:

• 1 bottle of Disappearing Ink
  
  

 Incredible Science Fun Learning Ideas:

• Learn about acids and bases, neutralization reactions and acid-base indicators (pH indicators).
• Reaction of the ink with the carbon dioxide in the air. It reacts to form carbonic acid which then reacts with sodium hydroxide to form sodium carbonate. The neutralization reaction causes the color change to become invisible!