1.

Classify the following into elements, compounds and mixtures: Sugar, sodium, nitrogen, sodium carbonate, air, sulphuric acid, mercury, stainless steel, cement, potassium dichromate.

Answer»
  • Elements: Sodium, nitrogen, mercury. 
  • Compounds: Sugar, sodium carbonate, sulphuric acid, potassium dichromate. 
  • Mixtures: Air, stainless steel, cement.


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