Week 1 Day 2 Flashcards
atomic number
number of protons
Atomic Mass
number of protons + number of Neutrons
isotope
different isotopes of an element have different number of neutrons
this changes the density but not the chemistry
valence electrons
electrons in the outer shell
Covalent bonds
sharing of electron pairs
*Do not dissolve in H2O
contain only nonmetals
Ionic bonds
transfer of valence electrons.
*strong bonds in vacuum, dissolve in H2O
Generally a metal and one or more non-metals
ionic compound charges must equal zero
Hydrogen bonds
attraction of the partial positive charges of the H to the partial negative charges of O & N
hydrophobic interactions
H2O repulsion of non-polar atoms
N2O
Dinitrogen monoxide
(Nitrous oxide)
NO
Nitrogen monoxide
(nitric oxide)
SCl2
Sulfur dichloride
P2O5
Diphosphorous pentoxide
CCl4
Carbon tetrachloride
SiO2
Silicon dioxide
H2O
Dihydrogen oxide
Cu+
Copper (I)
Cu2+
Copper (II)
Fe2+
Iron (II)
NH4+
Ammonium ion
H3O+
Hydronium ion