A smoke magically appears when two glasses are put close to each other
name: The diffusion of hydrogen chloride and ammonia gas through air to form ammonium chloride smoke
Both used liquides concentrated ammonia solution and concentrated hydrochloric acid are very corrosive. If either of these liquids comes into contact with your skin, flush with copious amounts of water. Wear goggles. If you get some in you eyes, immediatly flush with water for at least 15 minutes and seek medical attention. Vapors of both the used liquides are dangerous. Avoid breathing the vapors.
Always follow general safety
recommendations. Please note that conducting chemistry
experiments you must comply with the relevant legal procedures in
Hydrogen chloride and ammonia are gases at room temperature. They are highly soluble in water. Dissolved molecules easily pass into air from the concentrated solution. In the gas phase, molecules readily extend beyond the vessels. Ammonia and hydrogen chloride molecules react to form a new molecule called ammonium chloride. Separate molecules of ammonia chloride combine together to form a crystal. A small crystal nucleus grows bigger and bigger as new molecules of ammonia chloride join to it. Sometimes a couple of small crystals combine together giving a greater one. These new crystals can combine in their turn and so on. This process continues until particles become several thousandths of a millimeter in diameter. These particles form the smoke that we can see.