Disappearing Ink

$1.82 inclusive of GST & postage

A fun and exciting introduction to acids & bases, indicators, chemical & reversible changes. Squirt on a white cloth and breathe to acidify the solution and make it go clear. See if you can reverse the blue colour with an alkaline soap (see below).

Age:  5 to 12 years
Included: 30mL ink & 1 instruction sheet
Minimum order: 12  (packs of 12)   FREE shipping

Category: SKU: BB03

Description

These soaps work well in reversing the reaction.  The Supreme brand is sold at The Reject Shop.

Exhaling CO2 on the ink will acidify the ink and make it go clear due to the indicator.

All material Copyright, 2019 EduScience Pty Ltd.