Periodic Table (Vocab) Flashcards
Define the Periodic Table (for modern)
Table of elements arranged by increasing atomic number
(modern table)
Define the Periodic Table
for Mendeleev
Table of elements arranged by increasing atomic mass
Mendeleev
Define Energy Levels
Area located at a fixed distance from the nucleus of an atom where electrons can orbit the nucleus
Define Valence Electrons
Electrons in the outer energy level of an atom that is potentially involved in a chemical reactions
Define Groups
Column of the periodic table, which contains elements with similar properties
Define Metals
Class of elements that are good conductors of electricity
Define Periods
Row of the periodic table that contains elements ranging from metals on the left to metalloids and to nonmetals on the right
Define Metalloids
Class of elements that have some properties of metals and some properties of nonmetals
Define Families
Same thing as group
(column of periodic table which contains elements with similar properties)
~Mendeleev~
Define Element
Pure substance that cannot be separated into any other substances
Define Nonmetals
Class of elements that do not conduct electricity
Define Bohr’s Model
In Bohrs atomic model, electrons move around the nuclear us only at fixed distances, based on the amount of energy they have
Define APE Man
A word that helps you remember the places of things on the periodic table, also an equation
Define Chemical Symbol
A short hand way of representing an element (EX: Carbon = C)
Define Malleable
A metal that can be hammered, pressed Permanently out of shape without breaking are cracking
