CH 4 HW PART 2
Due: 11:59pm on Sunday, September 24, 2017
To understand how points are awarded, read the
for this assignment.
Animation—Rutherford’s Experiment: Nuclear Atoms
and study Rutherford’s nuclear atom model.
In 1909, Ernest Rutherford performed an experiment to explore the atomic structure. In his experiment, he projected high-speed
a thin gold foil. He found that all
particles did not follow the same path. Many particles passed through the foil without any scattering, implying that most of the
space in an atom is empty. Some particles were scattered at a large angle, and very few of them scattered back in the direction from which they had come. Based
on these observations, Rutherford proposed an atomic model, which is known as Rutherford’s atomic model.
Part A -
Conclusions from Rutherford’s experiment
depicting Rutherford’s experiment and choose which of the following conclusions are correct.
Check all that apply.
In Rutherford’s experiment, he bombarded positively charged
particle from a radioactive source onto thin gold foil. The foil was surrounded by a sheet
of fluorescent material (zinc sulfide
sheet lit up when it was hit with
particles. The image below shows the scattering of
The circular green spots on the fluorescent screen are formed when the
particles hit the screen.
By looking at the number of
particles that scattered at different angles from the gold foil, Rutherford proposed an atomic model, which is known as
Rutherford’s atomic model.
The image given below explains the molecular view of the scattering of
particles from the gold foil.
Typesetting math: 100%