Chemistry 1124 Test Questions With
Complete Answers
Periodicity - ANSWER A pattern of regularly recurring properties
atomic number - ANSWER Number of protons in the nucleus of each atom
Groups 3-12 - ANSWER Verticle columns
Family - ANSWER Set of elements with similar properties
Periods - ANSWER horizontal rows
Metalloids - ANSWER Elements with both metal and nonmetal properties
Atomic radius - ANSWER 1/2 the distance from the nucleus of one atom to the nucleus
of an adjacent identical atom in a molecule
Ionization energy - ANSWER Energy required to cause a gaseous atom or ion to release
an electronic
electron affinity - ANSWER Amount of energy involved when an electronic is acquired by
, a neutral gaseous atom
Chemical formula - ANSWER A symbolic representation of a compound that indicates
the elements present in the compound and the relative number of atoms of each using
elemental symbols and numerical subscripts
Bond length - ANSWER The distance at which attraction is greatest and potential energy
is least
Octet rule - ANSWER Elements tend to react chemically to form compumds by gaining
losing it sharing electrons archives a stable octet in it's highest occupied energy level
2nd law of thermodynamics - ANSWER All objects within a closed system tend to move
toward a state of greater stability but lower potential energy
Electronegativity - ANSWER A measure of the ability of an atom in a molecule to attract
electrons to itself
Network covalent substance - ANSWER Substance consisting of atoms joined by
covalent bonds into a crystalline structure
Hybridization - ANSWER The combinding of atomic orbitals of similar energies on the
same atom to provide special orbitals of equal energy for bonding
Complete Answers
Periodicity - ANSWER A pattern of regularly recurring properties
atomic number - ANSWER Number of protons in the nucleus of each atom
Groups 3-12 - ANSWER Verticle columns
Family - ANSWER Set of elements with similar properties
Periods - ANSWER horizontal rows
Metalloids - ANSWER Elements with both metal and nonmetal properties
Atomic radius - ANSWER 1/2 the distance from the nucleus of one atom to the nucleus
of an adjacent identical atom in a molecule
Ionization energy - ANSWER Energy required to cause a gaseous atom or ion to release
an electronic
electron affinity - ANSWER Amount of energy involved when an electronic is acquired by
, a neutral gaseous atom
Chemical formula - ANSWER A symbolic representation of a compound that indicates
the elements present in the compound and the relative number of atoms of each using
elemental symbols and numerical subscripts
Bond length - ANSWER The distance at which attraction is greatest and potential energy
is least
Octet rule - ANSWER Elements tend to react chemically to form compumds by gaining
losing it sharing electrons archives a stable octet in it's highest occupied energy level
2nd law of thermodynamics - ANSWER All objects within a closed system tend to move
toward a state of greater stability but lower potential energy
Electronegativity - ANSWER A measure of the ability of an atom in a molecule to attract
electrons to itself
Network covalent substance - ANSWER Substance consisting of atoms joined by
covalent bonds into a crystalline structure
Hybridization - ANSWER The combinding of atomic orbitals of similar energies on the
same atom to provide special orbitals of equal energy for bonding
