CHEM 108 Physical Science Survey Midterm Questions
With Complete Solutions
"Father of Chemistry"? Correct Answer Lavoisier
A acid solution has a pH less than what Correct Answer 7
A balance chemical reaction has what? Correct Answer The
same number of atoms of each element on each side of the
equation.
A base solution has a pH more than what? Correct Answer 7
A cartesian coordinate system is als called what? Correct
Answer a rectangular coordinate system
A combination reaction has the format Correct Answer
A+B=AB.
A covalent bond in which the electon pair is unequally shared is
called by what name? Correct Answer Polar Covalent bond
A meteoroid that strikes the Earth is called Correct Answer
Meteorite
A pendulum eventually stops oscillating. What happened to its
kinetic energy and potential energy? Correct Answer The
energy end up as heat due to friction.
A scalar quantity has only what? Correct Answer magnitude
( a numerical value and unit of measurement).
,A sextant is used to measure what? Correct Answer altitude
A type I supernova results from Correct Answer the
destruction of a white dwarf with a carbon-oxygen core
A type II supernova results from Correct Answer the collapse
of a iron core of a massive red super giant.
A vector quantity has both Correct Answer Magnitude and
directions
Absolute magnitude is defined as the Correct Answer
brightness a star would have if it were placed 10 pc from the
Earth.
After 2 half-lives have gone by, what fraction of the original
radionuclide remains? Correct Answer 1/4
An atom that has gained an electon is called a Correct Answer
ion
Apparent magnitude of a star is the Correct Answer
magnitude observed from Earth
At the end of the Sun's life, what kind of object will remain?
Correct Answer White dwarf star
Atoms of elements of Group 4A contains how many valence
electrons. Correct Answer 4(correlates to group number)
, Characteristics of terrestiral plantes. Correct Answer
composed of rocks and metals and high density
Classify the changes as physical or chemical: Dissolving surgar
in warter, crushing rock salt, burning sulfer, digesting a chili
dog. Correct Answer Dissolving surgar in water-physical
change
crushing rock salt- physical change
burning sulfer-chemical change
digesting a chili dog-chemical change
Classify the following materials as an element, compound,
heterogeneous mixture, or homogeneous mixture:Air, water,
diamond, soil Correct Answer Air-homogeneous mixture
Water-compound
diamaon-element
soil-heterogeneous mixture
Covalent compounds are formed when Correct Answer
electons are shared and molecules are produced.
Define acceleration. Correct Answer The time rate of change
of velocity.
Density equals Correct Answer Mass / Volume
Describe 'acids'. Correct Answer It conduct electicity
It chages the colar of litmus dye from blue to red
It tastes sour
It reacts with a base to neutralize its properties
It reacts with active metals to liberate hyrdogen gas.
With Complete Solutions
"Father of Chemistry"? Correct Answer Lavoisier
A acid solution has a pH less than what Correct Answer 7
A balance chemical reaction has what? Correct Answer The
same number of atoms of each element on each side of the
equation.
A base solution has a pH more than what? Correct Answer 7
A cartesian coordinate system is als called what? Correct
Answer a rectangular coordinate system
A combination reaction has the format Correct Answer
A+B=AB.
A covalent bond in which the electon pair is unequally shared is
called by what name? Correct Answer Polar Covalent bond
A meteoroid that strikes the Earth is called Correct Answer
Meteorite
A pendulum eventually stops oscillating. What happened to its
kinetic energy and potential energy? Correct Answer The
energy end up as heat due to friction.
A scalar quantity has only what? Correct Answer magnitude
( a numerical value and unit of measurement).
,A sextant is used to measure what? Correct Answer altitude
A type I supernova results from Correct Answer the
destruction of a white dwarf with a carbon-oxygen core
A type II supernova results from Correct Answer the collapse
of a iron core of a massive red super giant.
A vector quantity has both Correct Answer Magnitude and
directions
Absolute magnitude is defined as the Correct Answer
brightness a star would have if it were placed 10 pc from the
Earth.
After 2 half-lives have gone by, what fraction of the original
radionuclide remains? Correct Answer 1/4
An atom that has gained an electon is called a Correct Answer
ion
Apparent magnitude of a star is the Correct Answer
magnitude observed from Earth
At the end of the Sun's life, what kind of object will remain?
Correct Answer White dwarf star
Atoms of elements of Group 4A contains how many valence
electrons. Correct Answer 4(correlates to group number)
, Characteristics of terrestiral plantes. Correct Answer
composed of rocks and metals and high density
Classify the changes as physical or chemical: Dissolving surgar
in warter, crushing rock salt, burning sulfer, digesting a chili
dog. Correct Answer Dissolving surgar in water-physical
change
crushing rock salt- physical change
burning sulfer-chemical change
digesting a chili dog-chemical change
Classify the following materials as an element, compound,
heterogeneous mixture, or homogeneous mixture:Air, water,
diamond, soil Correct Answer Air-homogeneous mixture
Water-compound
diamaon-element
soil-heterogeneous mixture
Covalent compounds are formed when Correct Answer
electons are shared and molecules are produced.
Define acceleration. Correct Answer The time rate of change
of velocity.
Density equals Correct Answer Mass / Volume
Describe 'acids'. Correct Answer It conduct electicity
It chages the colar of litmus dye from blue to red
It tastes sour
It reacts with a base to neutralize its properties
It reacts with active metals to liberate hyrdogen gas.
