Ammonia is commonly used in cleaning solutions, as well as in manufacturing and water purification. Its chemical formula is NH3. The model below represents ammonia.

Question

Based on the model, which statement best describes ammonia?
A.
Ammonia is composed of molecules that are joined together to form an extended structure.
B.
Ammonia is composed of atoms of one type that can freely move past each other.
C.
Ammonia is composed of atoms of one type that are joined together to form an extended structure.
D.
Ammonia is composed of molecules that can freely move past each other.

Answer 1

The statement that best describes ammonia is:

D. Ammonia is composed of molecules that can freely move past each other.

Ammonia (NH3) consists of discrete molecules, and in a gaseous or liquid state, these molecules can move past each other freely.