Final answer:
The iconic symbol of chemistry that can be used to predict trends in the properties of elements is the Periodic Table.
Step-by-step explanation:
The iconic symbol of chemistry that can be used to predict trends in the properties of elements is the Periodic Table. It is a table that contains all of the known elements arranged in order of their atomic number. The position of an element in the table provides information about its properties, such as its atomic mass, atomic radius, and electronegativity. By analyzing the patterns and trends in the table, chemists can make predictions about the behavior and characteristics of elements.