Question

provide your answer below: element compound ammonia water manganese methane silicon iron silica copper

Explanation:

Step1: Recall element - compound definitions

An element is a pure substance made of only one type of atom. A compound is made of two or more different types of atoms chemically combined.

Step2: Categorize given substances

Manganese, silicon, iron, and copper are elements as they consist of only one - type of atom. Ammonia ($NH_3$), water ($H_2O$), methane ($CH_4$), and silica ($SiO_2$) are compounds as they are made of different types of atoms.

Answer:

Element: manganese, silicon, iron, copper
Compound: ammonia, water, methane, silica