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Regents Chemistry Unit 7
Test Description: Compounds!
Instructions: Answer all questions to get your test result.
1) Polar molecules have an END higher than
A
4.0
B
0.4
C
0.8
D
1.7
2) Water (H2O) and Hydrogen sulfide (H2S) are both
A
Polar
B
Ionic
C
Nonpolar
D
Metallic
3) CH4 (methane) N2 and O2 are all
A
Metallic
B
Ionic
C
Polar
D
Nonpolar
4) Elements that have what three compounds have the highest levels of hydrogen bonding between molecules?
A
Na, Pd, and H
B
N, O, and F
C
S, Zn, and Au
D
H, O, and Na
5) KCl is known by what common name?
A
Krypton chlorine
B
Potassium chloride
C
Potassium chlorine
D
Krypton calhydrate
6) If a metal has more than one possible oxidation state, how do you represent its oxidation state when writing the name of a compound?
A
Use Polyatomic Ions table E
B
Record the oxidation state after the name of the metal using Roman numerals
C
Using that many nonmetals
D
Use that number as the subscript of the metal
7) An ion that is made from two or more atoms and can be found on Reference Table E is known as a
A
Polyatomic ion
B
Cation
C
Rutherford ion
D
Anion
8) What term describes the simplest whole-number mole ratio of the elements in an ionic compound?
A
Empirical formula
B
Molecular formula
C
Ionic formula
D
Hydrogen bonding
9) What term indicates the total number of atoms of each element needed to form a molecule?
A
Hydrogen bonding
B
Molecular formula
C
Ionic formula
D
Empirical formula
10) Adding the mass of each of the elements in compound allows you to calculate the
A
Gram formula mass
B
Ionic properties
C
Ionic weight
D
Molecular formula
11) The proportion by mass of elements in a compound is known as
A
Gram:gram molarity
B
Ionic weight
C
Mass ratio
D
Percent composition
*select an answer for all questions
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