Electrons
Electrons carry this charge.
What is negative?
This tells us the number of protons in an element.
What is the atomic number?
States that all atoms want to have a full valence shell of 8 electrons.
What is the octet rule?
Who is John Dalton?
These elements never react, and are found in their pure, elemental form.
What are the Noble Gases?
What is an ion?
Massless energy given off during radioactive decay.
What is a gamma ray, or gamma radiation?
This subatomic particle is 1/1,840 the mass of a proton.
What is an electron?
While not the first to create the periodic table, this English scientist organized it using the Atomic Number.
Who is Henry Moseley?
These elements have a mix of characteristics, both metal and nonmetal.
What are metalloids?
J.J. Thomson created this oddly named model of the atom.
What is the "Plum Pudding" model?
Any element that has the properties of: brittle, dull, and poor conductor of thermal energy.
What is a nonmetal?
The arrangement of electrons, written out, so that a scientist can see all the shells, or orbits, electrons occupy.
What is an electron configuration?
While completely incorrect, his idea's regarding matter were used for centuries.
Who is Aristotle?
A maximum of 2 electrons can occupy a single atomic orbital.
What is the Pauli Exclusion Principal?
These electrons occupy the orbit farthest away from the nucelus.
What are valance electrons?
The subatomic particles responsible for the identity of an element.
What is a proton?
This subatomic particle is responsible for chemical reactions, and bonding.
What is the electron?
Preformed the famous "Gold Foil Experiment." Providing the data that proved the "Plum Pudding" model of the atom was incorrect.
Who is Ernest Rutherford?
These elements are located in the d-block of the periodic table.
What are transition metals?
Using a cathode ray, this scientist theorized the existence of the electron.
Who is J.J. Thompson?
The group of highly reactive elements, the most electronegative element is in this group.
What are Halogens?
What is the Aufbau Principle?
Thanks to his cathode ray experiment, he theorized the existence of negatively charged particles: the electron.
Who is Sir William Crooke?
These f-block elements are radioactive, and often used in nuclear power and nuclear bombs.
What are Actinides?