How does the food change in the stomach?

The food reaches the stomach via the esophagus where it undergoes churning; here various digestive juices secreted by the stomach lining mix with the food rendering it to a semi solid mass of soup like consistency known as 'chyme'. The stomach digests nutrients like salt and sugar while other complex food products are digested in the small intestine where the food passes from the stomach.  

In the small intestine the food mixes with vital enzymes secreted by the liver and the pancreas; fats and proteins are mainly digested in the small intestine. The inner lining of the small intestine is covered by projections called as villi that absorb the digested nutrients from the food and convey it to the blood stream.