Western Governors University D 425
Terms in this set (124)
WGU- INTRO TO CHEMISTRY exam with all
solution
Protons positive charge
The atomic number of an element is protons
the total number of which particles
in the
nucleus?
Electron A subatomic particle that has a negative charge
significant figures a prescribed decimal place that determines the
amount of rounding off to be done based on the
precision of the
measurement
mass number the sum of the number of neutrons and protons in an
atomic nucleus
amu atomic mass unit
average atomic mass formula (mass)(%)+(mass)(%)/100 ( % in decimal)
atomic radius the distance from the center of an atom's nucleus to
its outermost electron
Energy level 1 holds how many up to 2 electrons
electrons?
Energy level 2 holds how many up to 8 electrons
electrons?
Energy level 3 holds how many up to 18 electrons
electrons?
Lewis Dot Structure diagram of a molecule using dots to represent
valence electrons
polyatomic ions groups of atoms with an overall charge
funtional groups the components of organic molecules that are most
commonly involved in chemical reactions
Alkane a hydrocarbon containing only single covalent bonds
Alkyne carbon-carbon triple bond
, Alkene double bond, carbon to carbon.
Avogadro's number 6.02 x 10^23, the number of atoms or molecules in 1 mol
Terms in this set (124)
WGU- INTRO TO CHEMISTRY exam with all
solution
Protons positive charge
The atomic number of an element is protons
the total number of which particles
in the
nucleus?
Electron A subatomic particle that has a negative charge
significant figures a prescribed decimal place that determines the
amount of rounding off to be done based on the
precision of the
measurement
mass number the sum of the number of neutrons and protons in an
atomic nucleus
amu atomic mass unit
average atomic mass formula (mass)(%)+(mass)(%)/100 ( % in decimal)
atomic radius the distance from the center of an atom's nucleus to
its outermost electron
Energy level 1 holds how many up to 2 electrons
electrons?
Energy level 2 holds how many up to 8 electrons
electrons?
Energy level 3 holds how many up to 18 electrons
electrons?
Lewis Dot Structure diagram of a molecule using dots to represent
valence electrons
polyatomic ions groups of atoms with an overall charge
funtional groups the components of organic molecules that are most
commonly involved in chemical reactions
Alkane a hydrocarbon containing only single covalent bonds
Alkyne carbon-carbon triple bond
, Alkene double bond, carbon to carbon.
Avogadro's number 6.02 x 10^23, the number of atoms or molecules in 1 mol
