Channel Button

There are 7 articles on this title. You are reading the article ranked and rated #4 by Helium's members.

Sciences   >

Chemistry

Get a Widget for this title

How to make invisible ink

Kids always like to send secret messages to each other. Tell their cool or naughty little secrets without a parent or teacher discovering it. There are a few ways that they can do this and ingredients are in the kitchen.

*Mix equal parts water and baking soda together. Using a cotton swab, toothpick, or paintbrush, write your message onto white paper. Allow the ink to dry. Hold the paper up to a light bulb and watch the ink turn brown.

*Grape juice works as well.

*The easiest method is pure lemon juice in a glass container. This, also, turns brown.

*This is a bit more involved process. First, add 1 teaspoon iodine to about 10 teaspoons water. Set this aside for later. Next, mix 2 tablespoons cornstarch to 4 teaspoons water in a pan. Heat, while stirring, until smooth. Boil to make a gravy. DON'T BURN. Remove from heat. Dip a utensil to paint or write with. Let dry. Using a small sponge or a brush, swipe the iodine solution over the paper. The message should turn purple.

IMPORTANT NOTE: When using a light bulb to see the messages, DO NOT USE halogen bulbs. There is too much of a risk of setting fire to the paper.

And, parents, the messages may be a secret but watch the little ones when they use the stove.

Have fun.

Learn more about this author, Lillian Henry.
Contact this writer Click here to send this author comments or questions.


Below are the top articles rated and ranked by Helium members on:

How to make invisible ink

  • 1 of 7

    by Emily Strobel

    Invisible ink is a form of stenography, which is simply the art of writing hidden messages without letting the recipient

    read more

  • 2 of 7

    by Frances Simon

    Strongly associated with grade school and spy novels, invisible ink carries with it a sense of youthful excitement and mystery.

    read more

  • 3 of 7

    by Aldo Bonincontro

    The first option you can find on Internet, if you don't want to make the invisible ink by yourself, is a kit made by 2 pens:

    read more

  • 4 of 7

    by Lillian Henry

    Kids always like to send secret messages to each other. Tell their cool or naughty little secrets without a parent or teacher

    read more

  • 5 of 7

    by A Kairi

    Winter is on its way and soon many a bored child will be looking for activities to occupy the many hours they will spend

    read more

View All Articles on:
How to make invisible ink

Add your voice

Know something about How to make invisible ink?
We want to hear your view. Write_penWrite now!

Helium Debate

Cast your vote!

Does the Large Hadron Collider have the potential to destroy Earth?

Click for your side.

136398

Featured Partner

Pulitzer Center on Crisis Reporting

The Pulitzer Center on Crisis Reporting is an innovator in international nonprofit journalism. It goes beyond the hea...more

What is Helium? | Buy Web Content | Contact Us | Privacy | User agreement | DMCA | User Tools | Help | Community | Helium’s Official Blog | Link to Helium

Helium, Inc.
200 Brickstone Square Andover, MA 01810 USA