To prepare the indicator, cut blotting paper into strips. Dip into the red cabbage dye, hang and leave to dry. 3 If you want to test solid things like salt, sugar, backing soda and so on, then put a small amount of the food item you want to test into a saucer and add a quarter...
All you need to do to make nitrocellulose is treat cellulose with nitric acid or any other strong nitrating agent. The cellulose can come from paper, cotton, wood, or other plant matter. Nitrocellulose was first made by Alexander Parkes in 1862. This was the first man-made plastic, which w...