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CORC 1322 MAIN PAGE

MATTER

Introduction
Atoms and Molecules

ATOMIC STRUCTURE

Introduction
Electrons
Protons
Neutrons

REACTIONS

Introduction
Bonds and Octet Rules
Chemical Equations
The Mole

SOLVING PROBLEMS

Density
Conversions

VISUAL AIDS

Functional Groups
Periodic Table

QUIZZES

Practice Quiz I
Practice Quiz II
Practice Quiz III

Practice Quiz II:

1) What is the atomic number of a neutral atom with
16 electrons?
A) 36
B) 16
C) 32
D) None of the above
2) If a neutral atom has 11 electrons and 12 neutrons, what is its mass number?
A) 23
B) 12
C) 11
D) 1
3) Which particles are found in the nucleus of an atom?
A) Electron and Gluon
B) Proton and Electron
C) Electron and Neutron
D) Proton and Neutron
4) What are the properties of an alpha particle?
A) Mass four times that of a hydrogen atom and charge twice that of an electron but positive 
B) Composed of negative particles identical with cathode rays
C) Form of energy like X-rays but more penetrating
D) Neutral particle with increasing mass
5) What is the most observed property of the noble gases?
A) When they react with acids, they produce salt and water.
B) Fairly soft and moderately reactive with water
C) React vigorously with metals to form crystals
D) Lack of chemical reactivity due to electron configuration  
6) What are valence electrons?
A) Electrons outside the nucleus of an atom
B) Electrons equal in number to the atom's protons
C) Electrons in the atom's outermost, occupied energy level
D) None of the above
7) How many electrons are in the outermost energy shell of atoms in Group 5A?
A) 8.7 electrons
B) 3 electrons
C) 5 electrons
D) 10 electrons
8) Which elements are halogens?
A) Potassium, Beryllium, Carbon, Neon, Phosphorus
B) Magnesium, Calcium, Strontium, Barium, Radium
C) Sodium, Oxygen, Nitrogen, Lithium, Helium 
D) Fluorine, Chlorine, Bromine, Iodine, Astatine
9) What is the group number of the alkaline earth metals?
A) 2A
B) 6A
C) 8A
D) 5A
10) What are isotopes of an element?
A) Atoms with the same mass number
B) Atoms having the same number of protons but different number of neutrons
C) Atoms with 8 electrons in their last energy level
D) Halogens that don't combine with acids

To see the correct answers for the test go to solutions