Atomic Discoveries
This person discovered the dense, positive nucleus
Who is Rutherford
The location of protons in an atom.
What is the nucleus?
The mass of an atom with 10 protons and 9 neutrons
What is 19?
Rutherford used this along with alpha particles to discover the nucleus
What is gold foil?
Based on the mass on the periodic table, this isotope for Carbon is most abundant.
What is Carbon-12
This device was used to discover negative electrons
What is the cathode ray?
The mass of the neutron or proton.
What is 1 amu?
The # of neutrons in an atom of Carbon with a mass of 13
What is 7?
This person had several theories about atoms, like that they were indestructible spheres. Some of his theories were later disproven by others
Who is Dalton?
Argon has the most abundant isotope with a mass of this number.
What is 40?
This was the first "modern" scientist to come up with an atomic theory
Who is John Dalton?
What is -1?
32S has how many neutrons?
16
Discovered the neutron which has mass but no charge.
Who is Chadwick?
The weighted average of all the isotopes of that element
What is the average atomic mass.
The negative cathode ray was repelled by this subatomic particle.
What is the electron?
The way to calculate the mass number.
What is atomic number + neutrons?
The number of protons in an element with a mass of 152 and 89 neutrons
What is 63?
Ancient Greek philosopher who thought all matter was made of tiny particles he called "atomos"
Who is Democritus?
protons + neutrons
What is the mass number?
atom that has lost or gained electrons
What is an ion?
?
The location of electrons
What is shells/orbitals/energy levels?
What is the mass of an isotope of Hydrogen with 2 neutrons?
What is 3?
The name of Thomson's model for the atom-an English dessert.
What is "plum pudding"
Move the decimal to the left twice or divide by 100