![]() Zinc metal which is rock-like and silvery melted into liquid after heating. After heating, it glowed bright red and became a white ash. When the solution was absorbed into a paper towel and exposed to sunlight, color changed to brown and rusty When aqueous ammonia was reacted with copper (II) sulphate, a blue solution was formed.Ī white and cloudy solution. When the solution was absorbed into a paper towel and exposed to sunlight, color changed to brown and rusty. Silver nitrate reacted with aqueous ammonia, and the observation was a white and cloudy solution formed. Reaction of silver nitrate and sodium hydroxide resulted into a light brown, black starches. The indicator did not result in any color change when it was added to hydrochloric acid. When phenolphthalein indicator was added to a solution of sodium hydroxide, there was a color change to bright pink. Reaction of potassium iodide with lead nitrate solution produced a yellow color. The test for starch with IKI indicator resulted in a blue-black color of the solution. When sodium hydrogen carbonate was reacted with hydrochloric acid, there was no color change. Magnesium metal, zinc metal, copper carbonate and copper nitrate were heated in one experiment separately and then burned. Silver nitrate solution was also reacted with aqueous sodium hydroxide solution. The experiment was to distinguish between burning and heating.Ī few drops of hydrochloric acid were dropped in a product labelled sodium hydrogen carbonate. ![]() The purpose of the experiments were to observe chemical changes on various chemicals.
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