Chemistry Projects


Prussian blue ink is one of the easiest blue inks to make. (Adrien Ledoux)
You can prepare your own blue ink. This blue ink recipe is very easy and produces a beautiful blue ink for writing, drawing, or crafts. BLUE INK INGREDIENTS Prussian Blue pigment (sold as a pigment or sometimes as laundry bluing) water PREPARE BLUE INK It’s extremely easy! Mix the pigment into the […]

Blue Ink Recipe


Ancient tattoo ink recipes produce ink that is black or brown. (Giulia Bertelli)
This ancient tattoo ink recipe was devised by the Roman physician Aetius. It can be expected to produce a nice permanent iron-based ink, though the ingredients may cause irritation for some individuals. The reader is advised that this recipe is of historical significance, but safer and higher quality inks are available […]

Ancient Roman Tattoo Ink Recipe





Use translucent glycerin soap to make soap slime you can see through. (darwin Bell) 2
Soap slime is an easy-to-make type of slime that is fun to play with and makes clean-up fun. Here’s how you make it. Soap Slime Materials leftover pieces from bars of soap (or you can use a whole bar) water jar Make Soap Slime You’ve probably made soap slime accidentally […]

Super Easy Soap Slime Recipe


Cobalt(II) chloride may appear either pink or blue in solution, depending on which ion is formed. (Chemicalinterest)
This color change chemistry project will give you a liquid that fluctuates between pink and blue as the temperature changes. In essence, it’s a color change thermometer. What You Need beaker or attractive clear container 3 g cobalt(II) chloride hexahydrate (also known as cobaltous chloride hydrate) 500 ml alcohol Prepare […]

Make a Color Change Liquid Thermometer