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Fall Semester Review II
Test Description: 8TH SEMESTER EXAM REVIEW
Instructions: Answer all questions to get your test result.
1) An atom has a mass number of 19 and is composed of 9 protons, how many electrons?
A
9
B
19
C
10
D
28
2) An atom has a mass number of 19 and is composed of 9 protons, how many neutrons?
A
19
B
9
C
10
D
28
3) An atom has a mass number of 19 and is composed of 9 protons, what's the atomic number?
A
9
B
10
C
28
D
19
4) An atom has a mass number of 19 and is composed of 9 protons, what is the name of the element?
A
flourine
B
nickel
C
neon
D
Potassium
5) An atom has a mass number of 19 and is composed of 9 protons, how many valence?
A
9
B
7
C
19
D
17
6) An atom has an atomic number of 11 and 12 neutrons. What is the number of electrons?
A
12
B
1
C
11
D
23
7) An atom has an atomic number of 11 and 12 neutrons. What is mass number?
A
23
B
11
C
1
D
12
8) An atom has an atomic number of 11 and 12 neutrons. What is the number of protons?
A
12
B
23
C
11
D
1
9) An atom has an atomic number of 11 and 12 neutrons. What is the name of this element?
A
Hydrogen
B
Magnesium
C
Sodium
D
Vanadium
10) An atom has an atomic number of 11 and 12 neutrons. What is the valence?
A
23
B
12
C
1
D
11
11) Which elements are malleable, shiny and good conductors?
A
metals
B
nonmetals
C
metalloids
D
noble gas
12) Which elements can be described as dull, brittle and good insulators, but not good conductors?
A
metals
B
nonmetals
C
non gases
D
metalloids
13) Which element is in period 4?
A
Iron
B
Sodium
C
Aluminum
D
Boron
14) Which element have 6 valence electrons?
A
potassium
B
arsenic
C
selenium
D
krypton
15) Which element have 1 valence electron?
A
silver
B
cesium
C
beryllium
D
iodine
16) Which best describe the subatomic particle that is found in the nucleus of an atom?
A
It has no mass but no charge
B
it has a large mass and a negative charge
C
it has no mass and an equal number of positive and negative charges
D
it has mass and a positive charge
17) Based on the Periodic table, which element has similar physical properties as Magnesium?
A
Calcium
B
Aluminum
C
Lithium
D
Sodium
18) Gas at room temperature and colorless...
A
metalloids
B
nonmetals
C
nongases
D
metals
19) Dull and does not attract magnets
A
nongases
B
metalloids
C
nonmetals
D
metals
20) Ductile, shiny and conducts electricity.
A
metals
B
nongases
C
metalloids
D
nonmetals
*select an answer for all questions
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