Chemistry U3 Practice Test
complete with verified
solutions already graded A+
(solved & updated)
The measure of the ability of an atom of one element to attract electrons
from an atom of another element to form a compound is called ___. -
answer electronegativity
A(n) ___ is a positively charged ion formed when a neutral atom loses
electrons. - answer cation
intermolecular forces created by temporary dipoles that result from the
movement of electrons in the atoms within molecules - answer London
dispersion forces
force that forms between an unshared pair of electrons on one molecule
and a hydrogen atom bonded to a strongly electronegative atom on
another molecule - answer hydrogen bond
intermolecular forces resulting from the attraction of the negative portion
of the dipole of a polar molecule to the positive portion of the dipole of an
adjacent polar molecule - answer dipole-dipole forces
the mixing of two or more orbitals of different energy levels on the same
atom to produce new hybrid orbitals - answer hybridization
A(n) ___ is a group of atoms with a neutral charge held together by
covalent bonds. - answer molecule
, A(n) _____ is a chemical formula that uses element symbols to represent
nuclei and inner shell electrons, dot pairs or dashes to represent electron
pairs in covalent bonds and single or paired dots arranged around the
symbol to represent unshared electrons. - answer Lewis structure
A(n) ___ bond is a covalent bond in which the force of attraction for the
shared pair of electrons is exerted equally by all of the atoms in the
molecule. - answer nonpolar
The energy required to break a chemical bond and form neutral atoms is
called ___. - answer bond energy
The real basis of periodicity of elements is the electron ___ of their atoms.
- answer configuration
A type of chemical bond in which positively charged cations and
negatively charged anions are held together by electrostatic attraction is
called a(n) _____. - answer ionic bond
___ are p-block elements with electrons in p5 orbitals and are located in
Group 17 of the Periodic Table of Elements. - answer Halogens
Molecular compounds form covalent bonds by _______electrons, but _____
compounds form when ions give up or receive electrons. - answer sharing;
ionic
Covalently bonded atoms that function as a whole and have either a
surplus or deficit of electrons, giving them a positive or negative charge
are called ___. - answer polyatomic ions
Lithium and chlorine form an ionic bond. - answer LiCl
___ are very stable elements with electrons in p6 orbitals and located in
Group 18 of the Periodic Table of Elements. - answer Noble gases
complete with verified
solutions already graded A+
(solved & updated)
The measure of the ability of an atom of one element to attract electrons
from an atom of another element to form a compound is called ___. -
answer electronegativity
A(n) ___ is a positively charged ion formed when a neutral atom loses
electrons. - answer cation
intermolecular forces created by temporary dipoles that result from the
movement of electrons in the atoms within molecules - answer London
dispersion forces
force that forms between an unshared pair of electrons on one molecule
and a hydrogen atom bonded to a strongly electronegative atom on
another molecule - answer hydrogen bond
intermolecular forces resulting from the attraction of the negative portion
of the dipole of a polar molecule to the positive portion of the dipole of an
adjacent polar molecule - answer dipole-dipole forces
the mixing of two or more orbitals of different energy levels on the same
atom to produce new hybrid orbitals - answer hybridization
A(n) ___ is a group of atoms with a neutral charge held together by
covalent bonds. - answer molecule
, A(n) _____ is a chemical formula that uses element symbols to represent
nuclei and inner shell electrons, dot pairs or dashes to represent electron
pairs in covalent bonds and single or paired dots arranged around the
symbol to represent unshared electrons. - answer Lewis structure
A(n) ___ bond is a covalent bond in which the force of attraction for the
shared pair of electrons is exerted equally by all of the atoms in the
molecule. - answer nonpolar
The energy required to break a chemical bond and form neutral atoms is
called ___. - answer bond energy
The real basis of periodicity of elements is the electron ___ of their atoms.
- answer configuration
A type of chemical bond in which positively charged cations and
negatively charged anions are held together by electrostatic attraction is
called a(n) _____. - answer ionic bond
___ are p-block elements with electrons in p5 orbitals and are located in
Group 17 of the Periodic Table of Elements. - answer Halogens
Molecular compounds form covalent bonds by _______electrons, but _____
compounds form when ions give up or receive electrons. - answer sharing;
ionic
Covalently bonded atoms that function as a whole and have either a
surplus or deficit of electrons, giving them a positive or negative charge
are called ___. - answer polyatomic ions
Lithium and chlorine form an ionic bond. - answer LiCl
___ are very stable elements with electrons in p6 orbitals and located in
Group 18 of the Periodic Table of Elements. - answer Noble gases
