Unit A: Describing Matter

Remember that in this cumulative course, all "old" vocabulary is always fair game.

mixtures as compared to pure substances
heterogeneous, homogeneous
atoms as compared to molecules
elements as compared to compounds
weighted averages
percent yield
physical properties as compared to chemical properties
physical properties − extensive as compared to intensive, quantitative as compared to qualitative
solid, liquid, gas
solving literal equations - isolating a variable

Unit A Study Guide
  • chemical/physical changes
  • molecules/atoms
  • pure substance/mixture
  • homogeneous (aka solution) / heterogeneous mixture
  • intensive/ extensive
  • solving literal equations
  • nanoscopic/microscopic/macroscopic
    • If ever asked for a nanoscopic explanation, you must mention particles of some type in your explanation.
  • liquid/gas/solid
  • the nanoscopic model that explains the macroscopic properties of solids, liquids & gases: compressibility and fluidity
  • reaction
  • solution
  • allotropes: graphite v. diamond, oxygen vs ozone
  • matter
Lab work
  • evidence for chemical changes
  • “action” words for chemical and physical changes
  • percent yield
  • direct and inverse association statements