Science Camp Experiment: Invisible Ink

Dear Mom,

You know what’s weird about the counselors here? They encourage us to pass secret notes during lab!  It’s not like we’re sneaking around though. It’s part of an experiment. We made invisible ink this week and we have been sending each other secret messages ever since! Sometimes the counselors even send us messages too!

It’s really easy making invisible ink. Here’s how you do it:

What you need:

-          2 tablespoons lemon juice

-          ½ teaspoon water

-          Q tip

-          Paper

-          Lamp

-          An adult assistant

What you do:

Mix the lemon juice and the water in a small cup. Dip the Q tip into the lemon mixture and use it to write your message on the paper. Let the lemon juice dry and the message should disappear.

In order to read your message, have an adult assistant help you hold it close to a light bulb, until the heat from the light bulb turns the lemon juice brown.

Remember these instructions, mom, because the next letter you get from me might LOOK blank, but hold it up to a light and you’ll get a surprise!

Miss you!

Love

Alex

21 Responses to Science Camp Experiment: Invisible Ink

  1. Skiddly says:

    Oh, cool! I’ve heard of this but have never tried it. Maybe I’ll give it a shot! Thanks for the cool idea, Alex! Have fun at science camp!

  2. Holidaygirl says:

    That is really cool! You can also buy invisible ink pens at stores, but this way you save money. What a great idea.

  3. puppylover says:

    Wow! I never did that but i might try it.

  4. Emily says:

    Does that really work?? That would be so cool if it did!! If it does I want to try it some time!! Thanks for the recipe Webkinz Newz!!

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