Question

Starch+ H2O homogeneous or Heterogeneous +10 points

Answer 1

Answer:

Heterogeneous mixture

Explanation:

Starch in water is not homogeneous and technically not a solution either. The starch doesn’t dissolve instead it forms a colloid suspension but it is a bit different because the starch particles absorb some water so it forms a non newtonian fluid. This means it moves easily when you stir it slowly exhibiting low viscosity but higher viscosity when you stir it quickly. It is always heterogenous because starch is only very slightly soluble in water and so more than a tiny amount forms a suspension. It is possible to separate the starch by either letting it settle or by stiring it rapidly. The old style home cooking method was to let it stand and pour off the liquid on top then strain the remaining matter with a cloth and let it air dry. They still use this method for some commercial products.

Hope it helps you !