Fall Semester Review II Question Preview (ID: 40141)
8TH SEMESTER EXAM REVIEW.
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An atom has a mass number of 19 and is composed of 9 protons, how many electrons?
a) 10
b) 19
c) 9
d) 28
An atom has a mass number of 19 and is composed of 9 protons, how many neutrons?
a) 10
b) 19
c) 9
d) 28
An atom has a mass number of 19 and is composed of 9 protons, what's the atomic number?
a) 10
b) 19
c) 9
d) 28
An atom has a mass number of 19 and is composed of 9 protons, what is the name of the element?
a) Potassium
b) nickel
c) neon
d) flourine
An atom has a mass number of 19 and is composed of 9 protons, how many valence?
a) 19
b) 9
c) 17
d) 7
An atom has an atomic number of 11 and 12 neutrons. What is the number of electrons?
a) 11
b) 12
c) 1
d) 23
An atom has an atomic number of 11 and 12 neutrons. What is mass number?
a) 11
b) 12
c) 1
d) 23
An atom has an atomic number of 11 and 12 neutrons. What is the number of protons?
a) 11
b) 12
c) 1
d) 23
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
An atom has an atomic number of 11 and 12 neutrons. What is the valence?
a) 11
b) 12
c) 1
d) 23
Which elements are malleable, shiny and good conductors?
a) metalloids
b) nonmetals
c) metals
d) noble gas
Which elements can be described as dull, brittle and good insulators, but not good conductors?
a) metalloids
b) nonmetals
c) metals
d) non gases
Which element is in period 4?
a) Iron
b) Aluminum
c) Sodium
d) Boron
Which element have 6 valence electrons?
a) selenium
b) arsenic
c) potassium
d) krypton
Which element have 1 valence electron?
a) beryllium
b) cesium
c) silver
d) iodine
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
Based on the Periodic table, which element has similar physical properties as Magnesium?
a) Calcium
b) Lithium
c) Aluminum
d) Sodium
Gas at room temperature and colorless...
a) metals
b) nonmetals
c) metalloids
d) nongases
Dull and does not attract magnets
a) metals
b) nonmetals
c) metalloids
d) nongases
Ductile, shiny and conducts electricity.
a) metals
b) nonmetals
c) metalloids
d) nongases
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