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