Key Vocab
How Do You...
Other Important Information
100
Anything with mass and volume
What is matter?
100
Find the number of protons in an element
What is the element's atomic number?
100
Elements tend to bond so that they have 8 electrons in their valence shell (a full valence shell)
What is the octet rule?
200
A substance made up of 1 type of atom
What is an element?
200
Find the number of electrons in an element
What is generally equal to the number of protons
200
They are inert because they already have a full valence shell and have no need to bond with other elements
Why are noble gases inert?
300
An element with a different number of neutrons than usual
What is an isotope?
300
Calculate the number of neutrons in an element
What is the element's atomic mass minus its atomic number?
300
Electrons occupy orbitals singly before pairing
What is Hund's rule
400
An association of atoms in which 2 or more are linked by covalent bonds (can be the same type of atom)
What is a molecule
400
Determine the number of electrons in an atom's valence shell
What is the number of the group they are in on the periodic table?
500
A molecule made of atoms from different elements that are chemically connected
What is a compound?
500
Write an element's electron configuration
What is no^x where n=the energy level, o=the type of orbital, and x=the electrons in the orbital
M
e
n
u