Let a triangle represent atoms of element A and a circle represents atoms of element B.
a. Draw an atomic-level view of a homogenous mixture of elements A and B.
b. Draw an atomic view of the compound AB ina liquid state (molecules close together)
c. Draw an atomic view of the compound AB after it has undergone a physical change (such as evaporation)
d. Draw an atomic view of the compound after it has undergone a chemical change (such as decomposition of AB into A and B)