Question

I’m making an invisible ink experiment. I’m using baking soda, water and a heat source. How do I explain the chemical/physical reaction?

Answer 1

The physical reaction is...

Applying the baking soda/ water to the provided surface is a physical change, once a heat element is brought in, the releasing of heat is a chemical change; the baking soda changing color is in fact a chemical change because you are scorching it, it cant be undone.

Step-by-step explanation: