Using the electronic balance and a piece of weight paper, measure 2.00 g of sodium carbonate and put it in a 250 mL beaker. Using a graduated cylinder, add 50 mL of water and stir with glass stirring rod to dissolve.

Exothermic,  physical change after it is already baked

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

The reaction 2kalsi3o8 + 2(h+ + hco3-) + h2o  →  al2si2o5(oh)4 + 2k+ + 2hco3- + 4sio2 shows that feldspar kalsi3o8 is chemically altered by hydrolysis to form chalky-looking clay mineral kaolinite al2si2o5(oh)4. the chemical breakdown of potassium feldspar due to exposure to acidic water results to the mineral binding with the water molecule to become kaolinite with silica and potassium and bicarbonate ions in solution.