chemical analysis

• flame poop

  A) lithium

  B) yellow

  C) potassium

  D) calcium

  E) green

  
• to clean a nichrome wire, dip it in hydrochloric acid
• reacting with NaOH calcium produces white precipitate
• reacting with NaOH copper(III) produces blue precipitate
• reacting with NaOH iron(II) ions produce a dirty green precipitate
• reacting with NaOH Iron(III) ions produce a rusty brown precipitate
• reacting with NaOH aluminium ions form white precipitate and dissolve in excess
• when reacting with NaOH cobalt chlorite produces blue precipitate
• when reacting with NaOH magnesium produces white precipitate
• solutions containing sulfate ions form a white precipitate when barium chloride is added
• for sodium, chloride and bromide ions, they have to react with silver nitrate solution to produce a precipitate
• chloride produces a white precipitate in silver nitrate solution
• bromide produces a cream precipitate in a silver nitrate solution
• iodide produces a pale yellow precipitate in silver nitrate solution
• solutions containing carbonate ions react with dilute acid to produce carbon dioxide which will turn lime water milky