Learn how to make disappearing ink that is blue, red, or purple and vanishes in air. Understand the acid-base chemistry involved.
Chemistry Projects
It's easy to make nitrous oxide or laughing gas at home or in the lab by heating ammonium nitrate.
How to Make Nitrous Oxide or Laughing Gas
Here are the liquids used to make a 14 layer density column. Use food coloring to dye colorless layers.
How to Make a Density Column With Many Layers
Here is how to make lye from water and ashes, how to get solid lye from lye water, and how to make soap from homemade lye. Lye made from ashes is potassium hydroxide (KOH). The other type of lye is sodium hydroxide (NaOH). Sodium hydroxide lye is used for hard […]
How to Make Lye – Lye Water and Soap
It’s easy to extract bismuth from Pepto-Bismol tablets or liquid. Once you have the bismuth, you can grow colorful bismuth crystals. The active ingredient in Pepto-Bismol is bismuth subsalicylate (C7H5BiO4). Bismuth subsalicylate acts as an antacid, relieving gastrointestinal complaints, such as heartburn, diarrhea, indigestion, and nausea. It’s also antibacterial and […]
How to Extract Bismuth From Pepto Bismol
Permanent markers like Sharpies are great pens, but they quickly dry out if they are left uncapped or used a lot. You can recharge a dried out water-based marker by dipping the pen in water, but it won’t work with permanent ink. Fortunately, you can fix dried out markers using […]