Module 4: Nomenclature Flashcards
This is an abbreviation used to indicate an element or an atom of an element
Chemical symbols
Atoms of the same element that differ in mass
Isotopes
who discovered isotopes?
Fredrick Soddy
What is different from isotopes of the same element?
Number of neutrons
isotope of Hydrogen with no neutron
Protium
isotope of Hydrogen with one neutron
Deuterium
isotope of Hydrogen with two neutron
Tritium
This is approximately equal to the mass number of an element
Atomic mass
A weighted, average mass of all the isotopes present in a naturally occurring sample of that element
Atomic Mass
Atomic mass is expressed in?
atomic mass unit (amu)
Formula for average atomic mass unit
Summation of fraction abundance of one isotope x isotopic mass and so on
The instrument used to experimentally determine the occurrence and natural abundances of isotopes
Mass Spectrometry
An electrically charged atom
Ion
all ions are atoms?
True
all atoms are ions?
False
an atom that gains one or more electrons
Anion
a negatively charged ion
Anion
an atom that loses one or more electrons
Cation
a positively charged ion
Cation
Name for Group 1 in the periodic table
Alkali metals
Name for Group 2 in the periodic table
Alkaline earth metals
Name for Group 15 in the periodic table
Pnictogens
Name for Group 16 in the periodic table
Chalcogens
Name for Group 17 in the periodic table
Halogens
Name for Group 18 in the periodic table
Noble Gases
It is the representation of a molecule with the use of chemical symbols to indicate the type of atoms with a subscript that indicate the number of atoms of each type
Molecular Formula
It shows how the atoms are connected in a molecule
Structural Formula
It shows the molecular geometry of a molecule
Ball and Stick Model
It focus on showing the electron cloud of a molecule
Space-filling Model
Electron Cloud
areas of higher probability of finding an electron which is always in motion