Intro to Mat Science Day 2

Atomic Mass Unit

a standard unit used to measure the tiny mass of atoms and molecule

Atomic number

total count of protons found in an atom

Atomic weight

number of neautrons and protons in an atom

Coulombic force

physical force of attraction/repulsion

covalent bond

type of bond where extra electrons shared between atoms

covalent bonding

only type of primary bonding where the bond is directionally dependent

ionic

type of bonding that involves one high electronegative atom and one high electropositive atom

electronegative

atoms that want an electron

electro positive

atoms that want to lose an electron

cation

positive ion

anion

negative ion

salt

classic example of an ionic bond

metallic bond

type of bond that does not share, give, or accept electrons

metallic bond

bonds that use the term “sea of electrons”

Van der Waals

what type of bonding has the lowest melting temperature

ground state

term when all electrons occupy the lowest energy state

atomic/molecular dipole

A separation of positive and negative charges in a molecule or atom

polar molecules

term for permanent dipole bonds

polar molecules

strongest bonds in van der Waals bonds

ionic bonds

bond that has the most energy

van der Waals

type of bond that has the least amount of energy