Potassium Permanganate – KMnO4, when added to water it breaks down and causes beautiful purple streaks.
Iron Fillings – Fe, when thrown into flames they cause sparks. Not sure if this will be easy to capture in macro.
Malachite – CuSO4, this turns the flame green when burned.
Magnesium – Mg, this burns a bright white when put to a flame. I don’t think that this will be practical to film, let alone in macro.
Citric Acid – C6H8O7, this stuff reacts to water in an effervescent way. When mixed with sodium bicarbonate and a little olive oil to bond, it creates a sort of bath bomb which will be interesting at a macro level.
Reflection – I am looking forward to experimenting with these items and I am hoping for some good results with filming them too.
Actions – I will film the experiments and post the results at a later date.