Lesson 1
What chemistry experiment are Szilard and Einstein worried about?
Nuclear Chain reaction
Define Fission
the action of dividing or splitting something into two or more parts
how do you make a carbon atom?
By adding a proton, neutron, and electron
The nucleus has orbitals like the electron cloud? True or false
True
A neutron has a mass of?
Who is conducting the experiments in the article in lesson one?
Szilard & Fermi
The 235 and 238 represent?
the mass number, which is protons plus neutrons
Changing the number of neutrons can make a nucleus more or less stable? True or False
True
Draw the role of a neutron.
....
How many protons do a neutron have?
0
What two actions are proposed to President Roosevelt?
having an advisor and funding/speeding up the study of nuclear energy
Fission involves?
splitting up of atoms’ nuclei.
Carbon is smaller than uranium? True or False
True
how do atoms split?
Fission occurs
In a nuclear process, atoms are not conserved, but
the total number of protons plus neutrons is conserved
The U.S. began the Manhattan Project to do what?
They develop an atomic bomb with 20,000 people working on it.
Bombarding U-235 with a neutron can produce a chain reaction but bombarding U-237 won't?
bombarding U-238 won't
What happens when you add an extra neutron to a carbon atom?
It becomes unstable
Why do chain reactions happen?
When you add a neutron the nucleus becomes unstable and it breaks apart.
56 total protons in Ba
if you change them you have to change the element.
Nuclear reactors account for 70% of of US energy today? True or False
False it's 20%
We remember that electrons are?
“massless” and not inside atoms
What is the only particle you could change to make isotopes?
A neutron
Draw atoms splitting
.....
U-238 has a
More stable nucleus and decays much slower.