Answer:
1.
(1) chief of state, (2) chief executive, (3) chief administrator, (4) chief diplomat, (5) commander in chief, (6) chief legislator, (7) party chief, and (8) chief citizen. Chief of state refers to the President as the head of the government. He is the symbol of all the people.
2.
The vice president of the United States is the ex officio president of the Senate, as provided in Article I, Section 3, Clause 4, of the United States Constitution, but may only vote in order to break a tie.
3.
Through the impeachment process, Congress charges and then tries an official of the federal government for “Treason, Bribery, or other high Crimes and Misdemeanors.”(google)