I want to give my classmates a gift by doing my own chemical reaction.

Make a gas cylinder. I made two. Although we can't see the weather, the crystal is beautiful. The material package is on Taobao. It's simple! (Attached is my drawing)

Materials: natural camphor, ammonium chloride, potassium nitrate, anhydrous ethanol, distilled water.

The ratio of 100ml: 5g potassium nitrate (analytically pure 99%).

5g ammonium chloride (content 99.5%)

66 ml distilled water (distilled water for laboratory use)

80 ml anhydrous ethanol

20g of camphor powder (content 99%)

Do it yourself Baidu ~