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Chemistry Ch. 7
Test Description: Chemistry
Instructions: Answer all questions to get your test result.
1) The number that reflects the charge an atom in a compound would have if all the bonding electrons were given to the most electronegative element in the compound.
A
molecular formula
B
empirical formula
C
Avogadro's number
D
oxidation number
2) The system of names for chemical compounds
A
molecular formula
B
nomenclature
C
empirical formula
D
percent composition
3) A method of expressing the number of each type of atom in a molecular compound by using prefixes
A
Stock system
B
oxidation number
C
nomenclature
D
Greek prefix system
4) A method of expressing the oxidation state of metal ions using Roman numerals
A
oxidation number
B
Greek prefix system
C
nomenclature
D
Stock system
5) A compound in which hydrogen is the first element
A
acid
B
polyatomic atom
C
nomenclature
D
mole
6) A compound that has a positive or negative charge
A
nomenclature
B
polyatomic ion
C
acid
D
mole
7) The amount of substance contained in 6.022 x 10^23 particles.
A
polyatomic ion
B
acid
C
nomenclature
D
mole
8) The number of particles in one mole of an element, formula unit, or molecule; 6.022 x 102^3.
A
percent composition
B
oxidation number
C
molecular formula
D
Avogadro's number
9) The mass in grams of a mole of atoms
A
gram-molecular mass
B
gram-atomic mass
C
percent composition
D
gram-formula mass
10) The mass in grams of a mole of molecules.
A
percent composition
B
gram-formula mass
C
gram-atomic mass
D
gram-molecular mass
11) The mass in grams of a mole of a formula unit
A
gram-formula mass
B
gram molecular mass
C
percent composition
D
gram-atomic mass
12) An expression that tells the type of atoms present in a compound and exactly how many of each atom is in each unit of the compound.
A
Stock system
B
molecular formula
C
Greek prefix system
D
empirical formula
13) An expression that tells the type of atoms present in a compound and expresses them in the lowest possible whole number ratio for each unit of the compound
A
molecular formula
B
Greek prefix system
C
empirical formula
D
Stock system
14) A quantity that expresses the relative amount of an element in a compound based on mass.
A
percent composition
B
oxidation number
C
Avogadro's number
D
mole
*select an answer for all questions
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