An effervescence produced by adding dilute hydrochloric acid to solid. This is due to the presence of anion (negative ion)
Chloride
Iodide
Carbonate
Sulphate
The presence of water can be detected using
Anhydrous copper (II) sulphate
Anhydrous calcium chloride
Anhydrous potassium sulphate
Sulphuric acid
Substances that will kill bacteria and so they fight diseases caused by bacteria are called
Tranquillisers
Anti-cancer agents
Sedatives
Antibiotic
