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Term 2 Midterm
Test Description: Chemistry Term 2 Midterm Review
Instructions: Answer all questions to get your test result.
1) The ability of an object to transfer heat is known as thermal conductivity. Which of the following types of elements has the most efficient thermal conductivity?
A
gasses
B
nonmetals
C
Semimetals
D
metals
2) Why do elements Neon and Argon have similar chemical and physical properties?
A
They are in the same column
B
They are both metals
C
They are both alkalai earth metals
D
They are in the same row
3) Magnesium and sodium are highly reactive metals in the periodic table of elements. Magnesium and sodium have properties most similar to
A
highly reactive nonmetals like chlorine and oxygen.
B
highly reactive metals like lithium and potassium.
C
almost non–reactive gases like helium and neon.
D
less reactive metals like gold and silver.
4) Which list of elements is arranged in order of increasing electronegativity?
A
K, Ca, Sc
B
Li, Na, K
C
F, Cl, Br
D
Be, Mg, Ca
5) Which Color of light would have the lowest amount of energy?
A
Yellow
B
Blue
C
Violet
D
Red
6) The number of known elements at this time is approximately
A
50
B
100
C
Infinate
D
118
7) Which Two elements have the most similar chemical properties
A
Beryllium and Magnesium
B
Hydrogen and Helium
C
Phosphorus and Sulphur
D
Potassium and Strontium
8) Which block of the periodic table contains the noble gasses?
A
s
B
f
C
d
D
p
9) Which change occurs when an atom in an excited state returns to the ground state?
A
The number of electrons decreases.
B
The number of electrons increases.
C
Energy is emitted.
D
Energy is absorbed.
10) What is a method used by chemists and astronomers to determine the composition of unknown burning chemicals?
A
Decomposistion analyzation
B
Electrolosys
C
Spectomistry
D
Spectroscopy
11) A Potassium (K) valence electron in the ground state would have a principle energy number of______?
A
1
B
2
C
3
D
4
12) When cations and anions join, they form what kind of chemical bond?
A
metallic
B
covalent
C
ionic
D
hydrogen
13) How many electrons would Magnesium have to give up to be like a noble gas?
A
2
B
8
C
3
D
1
14) Elements in the same group in the periodic table are expected to have similar __________.
A
atomic numbers
B
appearance
C
reactivities
D
densities
15) Covalent bond is formed between
A
metaloids and metaloids
B
metals and nonmetals
C
a renegade Jedi knight and a Tatooinian queen
D
nonmetals and non metals
16) iven the equation c = λ ν calculate the frequency of a red light c= 3.0 x 108 m/s Wavelength of redlight = 7 x 10-7 m
A
3200 x 10^16
B
4.2 x 10^14 /s
C
2.3 x 10^-8 /s
D
.4 x 10^8 /s
17) A 4f electron orbital is most commonly associated with __________.
A
lantanide series elements
B
water
C
magnetism
D
electricity
18) What preferred charge do Alkalai Metals have?
A
-1
B
42
C
0
D
+1
19) How many valence electrons would a chlorine atom have if it were to gain an electron from sodium?
A
7
B
1
C
8
D
18
20) Describe the relationship between the frequency and energy of electromagnetic waves.
A
As frequency increases energy remains the same
B
As frequency increases energy disappears
C
As frequency increases energy increases
D
As frequency increases energy decreases
*select an answer for all questions
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