What is hydrochloric acid?

HCA lives in the stomach and turns solid food into a semi liquid, which is sent into the duodenum for further processing. When we drink liquds while eating, the HCA is diluted making digestion more difficult. 

What is chyme?

Chyme is the semi-liquid formed in the stomach after solid food is broken down by hydrochloric acid. The chyme moves into the small intestine (duodenum) where it is further broken down by digestive enzymes. Most digestive enyzymes occur in the duodenum and are received from the pancreas.