Home science experiments: How to make invisible ink

As part of our home science experiment series, we are showing you how to gets hands on with science to make learning more fun.

The video below explains how you can make your own invisible ink for sending secret messages that only a select few will be able to read. All you’ll need is a few typical household items and you will be able to write a message that only becomes visible under specific conditions. This is great way to see how acids and alkalis react before your very eyes and gain a better understanding of the pH scale.

Before you get started with this experiment, all you will need is:

  • Grape juice
  • Bicarbonate of soda
  • Water
  • Cotton buds
  • White paper
  • Paint brush

Now watch the video to find out what to do and exactly how this amazing experiment works….


Plus take a look at:

How to make a magnet

How to create a rainbow

How to bend water

Grow your own crystals 

How to make a catapult