10. Differentiate between Halogens and Noble Gases.

Halogens are very reactive because they need one electron to gain a full set of valence electrons whereas noble gases already have this one electron and are extremely unstable since they have their full octet. (8 electron set) They tend to not form chemical bonds because of this.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.