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Chemistry Review
Test Description: Chemistry review
Instructions: Answer all questions to get your test result.
1) Which of the following shows correctly an ion pair and the ionic compound the two ions form?
A
Sn4+, N3-; Sn4N3
B
Fe3+, O2-; Fe2O3
C
Cu2+, O2-; Cu2O2
D
Cr3+, I-; CrI
2) What family of metals is the most reactive?
A
Rare earth metals
B
Alkali metals
C
Transition metals
D
Alkaline earth metals
3) Which of the following electromagnetic waves have the highest frequencies?
A
microwaves
B
gamma rays
C
X-rays
D
ultraviolet light waves
4) Experiments using cathode ray tubes led to the discovery of the
A
proton
B
positron
C
neutron
D
electron
5) Oxygen is a group 6A nonmetal. What charge does oxygen typically form in a compound?
A
-2
B
+6
C
+2
D
-6
6) Emission of light from an atom occurs when an electron
A
moves within its atomic orbital.
B
falls into the nucleus.
C
jumps from a lower to a higher energy level.
D
drops from a higher to a lower energy level
7) In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?
A
Zn, 30 protons, 60 electrons
B
F, 19 protons, 19 electrons
C
In, 49 protons, 49 elect
D
Cs, 55 protons, 132.9 electrons
8) As you move from left to right across a period of the periodic table
A
atomic mass decreases
B
atomic radius increases
C
electronegativity decreases
D
ionization energy increases
9) What is the formula of sodium nitride?
A
NaN3
B
Na3N
C
Na2N
D
NaN
10) A ________ bond is the strongest bond with the ________ length.
A
double, longest
B
single, longest
C
triple, shortest
D
triple, longest
*select an answer for all questions
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