WorksheetsThou Shalt Not Forget - AP Chem Unit 0
Total questions: 11
Worksheet time: 7mins
Compounds can be separated into elements by ______.
chemical changes
physical changes
paper chromatography
_______ separates mixtures based on differences in particle size.
filtering
distillation
chromatography
_______ separates mixtures based on differences in boiling point.
filtering
distillation
chromatography
_______ separates mixtures based on differences in polarity.
filtering
distillation
chromatography
Which type of change conserves masss?
chemical
physical
both
neither
Rank the following from least precise to most precise.
beaker
graduated cylinder
volumetric flask
burette
density =
mass * volume
mass / volume
volume / mass
The simplest whole # ratio of the atoms in a compound is called the
molecular formula
empirical formula
density
percent yield
Percent yield =
experimental / theoretical
theoretical / experimental
theoretical * experimental
Percent error =
(experimental - theoretical) / theoretical
(experimental + theoretical) / theoretical
(experimental - theoretical) * theoretical
(experimental * theoretical) / theoretical
The amount of product for a reaction is determined by the...
limiting reactant
percent error
molecular formula
excess reactant
