The Classification of Matter and the Atom
two main classifications or categories of matter, generally speaking
"What are pure substances and mixtures?"
the two chemists or scientists who contributed to the "Periodic Table of Elements"
"Who is Dmitri Mendeleev and Henry Moseley?"
the least reactive group of elements in the Periodic Table; because of their full and complete outer shells
"What are noble gases?"
the statement or law which arranges the elements in their increasing atomic number; the basis of Henry Moseley
the sufficient energy needed to be absorbed by an atom to lose electrons and break the force holding the nucleus and electrons
"What is ionization energy?"
the two sub-classifications or categories of pure substances
"What are compounds and elements?"
"What is natrium?"
"What are halogens?"
the maximum amount of electrons that the shell with the principal quantum number (n=2) can hold
"What are the eight (8) electrons?"
the term for the relationship of ionization energy (as it increases) and atomic number (it decreases)
"What is an inversely proportional relationship?"
the three main statements or principles which explain the distribution of electrons in orbitals
"What is Aufbau's Principle, Pauli's Exclusion Principle, and Hund's Rule of Multiplicity?"
the other term for a vertical column in the Periodic Table, aside from "group"
"What is a family?"
the rule as to why the elements which are nonmetals in "Group 17" are quite reactive due to their incomplete outer shell; also used for ions
"What is the Octet Rule?"
the atomic property which is determined through taking the half of distance between the atom's diameter
"What is atomic radius?"
the measure of the ability of an atom to accept an electron; related to the "Octet Rule"
"What is electron affinity?"
the element represented by the electronic structure, 1s22s22p63s23p1
"What is aluminum?"
the term for elements found in the s-block and p-block of the Periodic Table
"What are representative elements?"
the term for reactions of alkali metals with water; releasing vast amounts of energy in the form of heat
the evidence or proof that atomic radius increases as you go down a group in the Periodic Table
"What is electronic configuration?"
the definition or term for the visual impression of the spectra produced by f-orbitals
"What is fundamental?"
the two elements whose electronic configuration is an exception to Aufbau's Principle
"What is chromium (1s22s22p63s23p63d54s1) and copper (1s22s22p63s23p64s13d10)?"
the shape of the outermost orbital in elements found in the "Halogens", based on the electronic configuration
"What is a peanut or dumbbell?"
the product of alkali metals after contact or interaction with water; based from "2Na+2H2O = 2NaOH + H2"
"What is a metal hydroxide (alkali) and a hydrogen gas?"
the electron which gives the atomic radius as it is the distance from the nucleus
"What is the outermost or valence electron?"
the formula which states that "Lanthanum (La)" and "Actinium (Ac)" are parts of the p-block elements