Chemistry ATP Tests

Chemistry ATP Tests

1. Flame tests

   • 4. clean the loop in acid and rinse with water, then repeat steps 1 to 3 with a new sample
     • 3. observe the changed colour of the flame, and decide which metal it indicates
       • 2. hold the flame test loop at the edge of a bunsen burner flame
         • 1. dip a clean flame test loop in the sample solution
   • Potassium
   • Lithium
   • Barium
   • Copper
   • Sodium
   • Calcium

2. Anion Tests

   • Halides (in solution)
     • Acidify with dilute NITRIC ACID, then add SILVER NITRATE
       • Chloride Cl- WHITE ppt.
       • Bromide Br- CREAM ppt.
       • Iodide I- YELLOW ppt
   • Carbonate CO32–
     • Add dilute ACID
       • EFFERVESCENCE
       • CARBON DIOXIDE produced
   • Nitrate (in solution) NO3-
     • Add aqueous SODIUM HYDROXIDE, then aluminium foil and warm carefully
       • AMMONIA NO3- produced
   • Sulfate (in solution) SO42-
     • Add dilute HYDROCHLORIC ACID, then add aqueous BARIUM NITRATE
       • WHITE ppt.

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