Lowell Honors Chemistry
Test Study Guide: Chapters 2 and 3
[Note: Scientific calculators allowed; graphing calculators are not allowed. You will be provided with a copy of the periodic table. Bring a #2 pencil. There are 100 multiple choice questions.]
KNOW THE FOLLOWING CONCEPTS:
o Millikan’s, Rutherford’s, and Thomson’s experiments regarding the structure of an atom
o Dalton’s atomic theory
o compare and contrast between elements, atoms, molecules, compounds, and ions
o types of subatomic particles and their relative masses and locations in an atom
o relationship between the nucleus and the mass and size of an atom
o isotopes
o difference between a covalent bond and an ionic bond
o how to interpret the periodic table
o the differences between groups and periods on the periodic table
o characteristics of elements within a group based on the periodic table
o ion charges based on the periodic table
o identify metals, metalloids, and nonmetals based on the periodic table
o identify Groups 1A, 2A, 7A, and 8A based on group name
o diatomic elements
o law of conservation of mass
o valence electrons and their significance
o Lewis electron dot structures
o moles, Avogadro’s number, molar mass, etc.
o mass percent composition
o empirical and molecular formulas
o molarity
o concentrations of ionic solutions
BE ABLE TO ANSWER PROBLEMS INVOLVING:
o identifying the numbers of protons, neutrons, and electrons based on atomic number, atomic mass, and charge
o A – Z – X notation for elements and their ions
o write chemical equations how ions (either cations or anions) are made
o how to write chemical formulas of compounds (both ionic and covalent)
o converting between moles, Avogadro’s number, molar mass, etc.
o mass percent composition
o determining the empirical and molecular formulas, given the mass percent composition
o calculating isotopic molar mass
o molarity calculations
o any variation of the above types of problems may show up on the quiz
If you have any questions, please feel free to e-mail me or stop by our classroom.
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