Physical Science 1114 UPDATED Exam Questions
and CORRECT Answers
Amount of energy required to raise the temperature of a substance - Answer - Specific
heat
Energy needed to break equilibrium and cause boiling - Answer - heat of vaporization
Structural formula - Answer - O = C = O
Chemical formula - Answer - CO2
Electrically neutral molecule - Answer - Nonpolar molecule
Molecule with positive and negative poles - Answer - Polar molecule
Molecule of two atoms of same element - Answer - diatomic molecule
Electrochemical bond that holds together in the liquid or solid phase - Answer -
Molecular bond
Any bond in which electrons pairs are shared between atoms - Answer - Covalent bond
A bond of hydrogen and another element - Answer - Hydrogen bond
Pole - Answer - region of electrical charge
Located near atom with lower EV - Answer - Positive pole
Located near atom with higher EV - Answer - Negative pole
, Indicates a partial charge when used with + or - - Answer - O with weird line thing on it
State of balance - Answer - equilibrium
Chlorine is often added to municipal water supplies because it kills ___ ___ - Answer -
Harmful bacteria
At standard pressure liquid water cannot be heated to a temperature higher than 100°C
because - Answer - At 100°C water becomes a gas
At equilibrium the ___ ___ of water is equal to the atmospheric pressure - Answer -
Internal pressure
Ice floats because water ___ just before it freezes - Answer - Expands
In an electron dot configuration the dots represent the _____ - Answer - Valence
electeons
In a structural formula each —— represents ____________ - Answer - One pair of
shared electeons
The exact arrangement of atoms in a molecule is shown by a __ ___ - Answer -
Structural formula
A covalent bond of two oxygen atoms is a ____ bond - Answer - Nonpolar
In a polar covalent bond one of the atoms holds the shared electron pair closer because
it _________ than the other arom - Answer - Exerts a stronger pull
The atom holding the electron pair closer has a slightly ______ charge because
electrons have a _______ charge - Answer - negative, negative
and CORRECT Answers
Amount of energy required to raise the temperature of a substance - Answer - Specific
heat
Energy needed to break equilibrium and cause boiling - Answer - heat of vaporization
Structural formula - Answer - O = C = O
Chemical formula - Answer - CO2
Electrically neutral molecule - Answer - Nonpolar molecule
Molecule with positive and negative poles - Answer - Polar molecule
Molecule of two atoms of same element - Answer - diatomic molecule
Electrochemical bond that holds together in the liquid or solid phase - Answer -
Molecular bond
Any bond in which electrons pairs are shared between atoms - Answer - Covalent bond
A bond of hydrogen and another element - Answer - Hydrogen bond
Pole - Answer - region of electrical charge
Located near atom with lower EV - Answer - Positive pole
Located near atom with higher EV - Answer - Negative pole
, Indicates a partial charge when used with + or - - Answer - O with weird line thing on it
State of balance - Answer - equilibrium
Chlorine is often added to municipal water supplies because it kills ___ ___ - Answer -
Harmful bacteria
At standard pressure liquid water cannot be heated to a temperature higher than 100°C
because - Answer - At 100°C water becomes a gas
At equilibrium the ___ ___ of water is equal to the atmospheric pressure - Answer -
Internal pressure
Ice floats because water ___ just before it freezes - Answer - Expands
In an electron dot configuration the dots represent the _____ - Answer - Valence
electeons
In a structural formula each —— represents ____________ - Answer - One pair of
shared electeons
The exact arrangement of atoms in a molecule is shown by a __ ___ - Answer -
Structural formula
A covalent bond of two oxygen atoms is a ____ bond - Answer - Nonpolar
In a polar covalent bond one of the atoms holds the shared electron pair closer because
it _________ than the other arom - Answer - Exerts a stronger pull
The atom holding the electron pair closer has a slightly ______ charge because
electrons have a _______ charge - Answer - negative, negative
