The following chemical test are using to identify inorganic and organic(alcohol, ketone, alkene, carbohydrates) compunds. Explain why each color change, precipatate formation, gas evolution, occurred

1.Solubily in water and hexane
2.Density for a liquid and a solid (procedure and calculations)
3. Chromic acid test (CrO42-)
4. Potassium permanganate Test (KMnO4)
5. Test with Iodine
6. Test with Benedict's Solution
7. Tests for anions and cations

Thank you so much!