FREE Shipping on all our products! (Please expect 2 to 4 weeks for delivery due to  transit delays. We ship every day including Saturday

0

Your Cart is Empty

How you can use kitchen science to send a secret message on Valentine's Day

February 05, 2018 2 min read

With Valentine’s Day just around the corner, I thought it was a perfect time to share with you a kitchen science activity you can use to send secret messages to your loved one!

How to use kitchen science to send a secret message

This is one of our kids' favorite things to do - there’s nothing like getting a blank piece of paper and making a secret message appear!

What you need

To make your secret message you will need the following:

  • A blank piece of paper
  • Lemon juice
  • A Q-tip
  • A heat source (Adults only: A burner in your kitchen or a candle will work well for this).

What to do to make your secret message

Here is how you make your secret message

  1. Have the students dip the Q-tip in the lemon juice and use it to write a message on the paper.
  2. Let the paper dry thoroughly.
  3. Then, let the students watch as you reveal the message. (Adult Only) Hold the paper over the heat source until the message appears.  Remove quickly or the paper will burn.
(Safety Notice: Be sure to take the necessary precautions, such as a hot mat, to make sure that you don’t get burned.)

What should happen

After the paper has been heated up, the message on the paper will turn brown, making it possible to read.

The acid in the lemon juice breaks down the paper a bit, thus weakening it.  The weakened paper burns before the rest of the paper, which is why you must remove it from the heat source just after the message appears or the entire paper will burn.

A few more kitchen science ideas

You can try the experiment again using water, which is neutral.  It should not degrade the paper the way the lemon juice does, so the message won’t appear.  You can also try writing messages with vinegar, orange juice or white wine, which will degrade the paper the same way the lemon juice did.


2 Responses

Paige Hudson
Paige Hudson

September 02, 2019

Heather, it should. Or you can also use milk :-).

Heather
Heather

September 02, 2019

Would lime juice work as well?

Leave a comment

Comments will be approved before showing up.


Also in Homeschool Science Activities

How to create a black hole in less than 10 minutes with Sharpies, an oven, and a plastic cup

April 15, 2020 2 min read

Grab a cup and a few Sharpies to make an artistic version of a black hole in this STEAM activity.

How can you create a black hole in the comforts of your home in less than 10 minutes? Click "Read More" to get step-by-step science activity that will explain it all.

How to make your own moon diary with Paul Sims from Sassafras Science {Free Templates Included}

February 12, 2020 3 min read

 

Hi-ya, Blaine and Tracey Sassafras here to share with you all one of our Sassafras Science astronomy local experts. Paul Sims is visiting the blog to tell you a bit about the moon, plus we added FREE moon diary templates to the mix. Click "Read More" to get started!!

3 Winter science activities to spruce up the season

December 16, 2019 3 min read

Winter is here - spruce up the season with these three winter science ideas! Click "Read More" to get started.

Join Us