People and the Atom 1
He didn't believe in atoms or matter.
Who is Aristotle?
This chemist performed the oil drop experiment where he was able to calculate the charge of a single electron.
Who is Robert Millikan?
This is the positive subatomic particle present in the nucleus of the atom.
What is a proton?
In an isotope of a specific element, this subatomic particle can vary.
What is a neutron?
The number of neutrons in: Cobalt-60
What is 33?
This Greek Philosopher was the first to suggest the idea of an atom. He called atoms - atomos and believed that they could not be broken down further.
Who is Democritus?
This chemist is credited with the discovery of the neutron. His experiments were similar to Rutherford's Gold Foil experiments.
Who is James Chadwick?
This is the negative subatomic particle present in the atom.
What is an electron?
In the isotope hyphen notation, the number after the hyphen is called this...
What is the mass number?
The number of neutrons in Iron-56.
What is 30?
This chemist is famous for his Cathode Ray Tube experiments and the discovery of the electron. He named his atomic model the Plum Pudding model.
Who is JJ Thomson?
This scientist was interested in studying light and energy. His research focused on how the electrons are positioned around the nucleus. He concluded that electron orbits are associated with varying amounts of energy. His atomic model bears his name.
Who is Niels Bohr?
This is the neutrally charged subatomic particle found in atom.
What is a neutron?
In AZ notation, this is the value that A represents
What is the mass number or the number of protons plus neutrons?
This element has 6 protons and 6 electrons.
What is carbon?
This English school teacher theorized about matter and atoms. His theory includes 5 postulates describing how all matter is composed of atoms that are indivisible. His model of the atom is called the Billiard Ball Model.
These two scientists worked together to further refine Bohr's model. They both were interested in studying the uncertainty of electron location and movement. Their work led to the refinement of Bohr's model - the Quantum Mechanical Model of the Atom.
Who are Schrodinger and Heisenburg?
This is where all of the mass of an atom is located.
What is the nucleus?
What is the average atomic mass?
This element has 80 protons.
What is mercury?
These "scientists" sought out a spiritual investigation of nature.
Who are the alchemists?
In his gold foil experiments, this scientist discovered the presence of the nucleus and the existence of the proton.
Who is Ernest Rutherford?
This subatomic particle never changes while the other two subatomic particles can be lost or gained.
What is the proton?
This subatomic particle exists to stabilize the nucleus and is the reason why isotopes exist.
What is the neutron?
The number of neutrons in Sulfur-23.
What is 7?