Determine what the unknown chemicals are, they should be either MgSO4, CaSO4, Na2CO3, cornstarch, sucrose. Unknown A was insoluble in water, deep blue for I2 tincture test, nothing happened with anthocyanin and naOH. Unknown B soluble in water, nothing happened with I2 tincture test, turned yellow in anthocyanin, nothing happened with NaOh. Unknown C was soluble in water, pink when anthocyanin added, white solid with NaOH. Unknown D was soluble in water, pink with the addition of anthocyanin, no solid with NaOH. Unknown E was insoluble in water, no deep blue color with I2 tincture test.