exam 1 Flashcards
(23 cards)
crystalline solid possess…
rigid and long range order.
atoms, molecules, or ions occupy specific positions
amorphous solids lack
a regular 3-D arrangement of atoms
ionic crystalline solids have what IMF
ionic bonds and dispersion forces
ionic crystalline solids general properties
hard and brittle
high melting point
don’t conduct electricity unless dissolved/ dissociated
examples of ionic crystalline solids
NaCl
LiF
MgO
CaCO3
covalent crystalline solids IMFs
covalent bonds
covalent crystalline solids general properties
hard and brittle
high melting point
poor conductor of electricity
examples of covalent crystalline solids
diamond (C) SiO2, quartz
molecular crystalline solids IMFs
holding individual molecules together, not bonded network
molecular crystalline solids general properties
soft
low melting point
bad conductor of heat and electricity
examples of molecular crystalline solids
Ar, CO, I2, H2O, C12H22O11
metallic crystalline solids IMFs
metallic bonds
metallic crystalline solids general properties
variable hardness and melting point
good conductor of heat
examples of metallic crystalline solids
Na, Mg, Fe, Cu
a solution is a
homogenous mixture of two or more substances
a solution consists of a…
solvent and one or more solutes
unsaturated solution is one that contains
less solute than the solvent has the capacity to dissolve
saturated solution is one that
contains the maximum amount of solute that will dissolve in a solvent
supersaturated solutions contains
more dissolved solute than is present in a saturated solution and are generally unstable
bonds are broken for dissolving is
solute-solute
solvent-solvent
requires energy
endothermic
bonds are formed by dissolving
solute- solvent
releases energy
exothermic
a driving force for the spontaneous dissolution of a solute in a solvent is the increase of
entropy
