History of the Atom
He was the first scientist to argue that all matter was made from indivisible particles called atoms
Who was Democritus?
This is the subatomic particle with a neutral charge.
What is a neutron?
This is the name for rows in the Periodic Table.
What are periods?
He is the Russian chemist and teacher who developed the first version of the Periodic Table.
Who was Dmitri Mendeleev?
These two subatomic particles share the nucleus.
What are protons and neutrons?
This is the Greek word for "uncuttable" or "indivisible"
What is atomos?
These are the subatomic particles that orbit the nucleus of an atom.
What are electrons?
This is the name for columns in the Periodic Table.
What are groups?
Some elements make sense with our English words (i.e. H= Hydrogen). Some do not make sense (i.e. Au=Gold). What original language are these based on?
What is Latin?
This is the region of space around the nucleus where electrons are most likely to be found.
What is an orbital?
John Dalton used the Law of Conservation of Mass to formulate his atomic theory. This is the definition of that Law.
What is- matter cannot be created or destroyed, but it can change forms.
(will accept only the first part)
This is the reason atoms are neutral in charge.
What is because they contain the same number of protons and electrons?
This is the name used on the Periodic Table to describe the number of protons in an atom
What is the Atomic Number?
This is the element that is grouped with Alkali Metals because of its one electron, but is NOT an Alkali Metal.
What is Hydrogen?
The name of the currently accepted model of the atom.
What is the electron cloud model?
This is the Americanized version of JJ Thomson's atomic "Plum Pudding Model"
What is the Blueberry Muffin Model
These subatomic particles have a positive charge that is equal in magnitude to the negative charge of the electron.
What are protons?
This is the name for the bottom number below an element on the Periodic Table.
What is the Atomic Mass?
These is the specific name for the electrons in the energy level farthest from the nucleus.
What are valence electrons?
This is the scientist who hypothesized about the fixed distances around the nucleus of the atom, called energy levels or electron shells.
Who was Niels Bohr?
This is the name of the fast-moving positively charged particle tested during Ernest Rutherford's Gold Foil Experiment in 1899.
What is the alpha particle?
This is the name for the atoms of an element with the same number of protons but different numbers of neutrons.
What are isotopes?
This is another name for the elements on the Periodic Table that are the most naturally abundant elements.
What are Main Group Elements? (will also accept A Group elements)
This is the name for the sum of the protons and neutrons in the nucleus of an atom.
What is the Mass Number?
This is the name for the state that would cause an electron in an energy level to absorb energy and move to an orbital with higher energy
What is an "excited state"