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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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