Burn writing paper Burn paper to produce charcoal or carbon - black insoluble substance. Sul acid to paper - this too is carbon. Dehydration of cellulose a carbohydrate by concentrated sulfuric acid. Activated charcoal decolorized red wine and absorbs foul vapors. Burnt toast is a folk remedy for an upset stomach.
Gas remains in upright jar taper - then pour it into another jar with a burning taper.
Test with taper then pour gas into another jar with containing burning candle. Nooth's apparatus and by force much may in this way be condensed. This apparatus was used to produce carbonated water. All these substances contain carbon dioxide. As pressure falls, carbon dioxide bubbles from solution.