Answer:
Some of the heavy particles bounced off the foil, because there is a dense, positive area in the atom.
Step-by-step explanation:
The conclusion from Rutherford’s gold foil experiment:
1. Most of the particles passed through the undeflected proving that most of the atm is empty space.
2. Some of the particles deflected by small angle proving that the center of the atom has a positive charge.
3. Also some of the particles travel back from the foil or bounced off the foil proving that the entire mass of the atom is located in the center also known as the nucleus of the atom.