Key Terms Needed For the Unit 1 Evaluation
You should know the definitions for each of these key terms and be able to use them correctly when talking about chemistry.
__  observation
__  inference
__  empirical knowledge
__  theoretical knowledge
__  theory
__  model
__  atom
__  electron
__  nucleus
__  proton
__  neutron
__  isotope
__  electromagnetic                     spectrum
__  frequency
__  wavelength
__  nanometer
__  visible spectrum
__  continuous spectrum
__  line spectrum
__  spectroscope
__  quantized
__  excited state
__  ground state
__  alkali metal
__  flame emission                       spectroscopy
__  base
__  pH
__  indicator
__  acid
__  conductivity
__  electrolyte
__  nonelectrolyte
__  octet rule
__  ion
__  anion
__  cation
__  valence electrons
__  Lewis symbol
__  monatomic ion
__  polyatomic ion
__  ionic bond
__  ionic compound
__  ionic crystal
__  formula unit
__  dissociate
__  IUPAC
__  covalent bond
__  molecule
__  chemical entity
__  Lewis structure
__  lone pair
__  electronegativity
__  non-polar covalent       bond
__  polar covalent                   bond
__  polar molecule
__  non-polar                       molecule
__  dipole-dipole force           (DDF)
__  London Dispersion               Force (LDF)
__  van der Waals                Force
__  chemical reaction
__  synthesis reaction
__  decomposition                reaction
__  single displace-                  ment reaction
__  double displacement             reaction
__  enzyme
__  solution
__  solute
__  solvent
__  homogeneous mixture
__  heterogeneous mixture
__  aqueous solution
__  precipitate
__  solubility
__  net ionic equation
__  total ionic equation
__  spectator ion
__  centrifuge
__  supernate



Key Symbols and Equations
λ (lambda)


nm


synthesis reaction      A + B --->  AB
decomposition reaction   AB ---> A  +  B
single displacement reaction   A  + BC ----->   B  + AC
double displacement reaction    AB  +  CD   ---->  AD  +   CB



Problems You Should Be Able To Solve:
• Draw Lewis structures with single bonds
• Draw Lewis structures with double bonds
• Draw Lewis structures with triple bonds
• Draw Lewis structures for molecules that consist of more than one type of atom.
• Predict the formation of a precipitate
• Write total ionic equations and net ionic equations