CHEM 141 EXAM 1|| 2025 LATEST
UPDATE!!
what is the same for gravitational and electrostatic forces - ANSWERboth require two
objects
what are gravitational forces proportional to? - ANSWERto mass of objects
what are electrostatic forces proportional to? - ANSWERto charge
are gravitational forces attractive or repulsive? - ANSWERattractive
are electrostatic forces attractive or repulsive? - ANSWERboth
if a system is isolated, what do you think will happen to the kinetic energy as the
potential energy decreases? - ANSWERit will increase
what is the smallest? - ANSWERelectrons
the distance between two helium atoms that are approaching each other is most stable
where? - ANSWERwhere the potential energy is at a minimum
two atoms approach and get close enough so that their electron clouds overlap. why
does the potential energy increase? - ANSWERthe electron clouds repel each other
what is the cause of the attractive force between the two He atoms? - ANSWERthe
electron clouds of the He atoms may fluctuate randomly causing a transient dipole that
induces a dipole in other atoms which causes them to attract each other.
"elements are composed of a small indivisible, indestructible particles called atoms."
true or false? - ANSWERfalse, atoms have a sub-structure.
if you put bromine liquid in a pan on the stove and heat it up the bromine will boil. what
is that mechanism by which this happens? - ANSWERas more bromine molecules get
more energy, they can overcome the ELECTROSTATIC FORCES of attraction and the
bromine molecules can escape into the gas phase.
in an ISOLATED system, when two atoms collide, what is always true? - ANSWERthe
total energy of the system will not change
M1= 5g
M2= 5g
M3= 10g
M4= 10g
UPDATE!!
what is the same for gravitational and electrostatic forces - ANSWERboth require two
objects
what are gravitational forces proportional to? - ANSWERto mass of objects
what are electrostatic forces proportional to? - ANSWERto charge
are gravitational forces attractive or repulsive? - ANSWERattractive
are electrostatic forces attractive or repulsive? - ANSWERboth
if a system is isolated, what do you think will happen to the kinetic energy as the
potential energy decreases? - ANSWERit will increase
what is the smallest? - ANSWERelectrons
the distance between two helium atoms that are approaching each other is most stable
where? - ANSWERwhere the potential energy is at a minimum
two atoms approach and get close enough so that their electron clouds overlap. why
does the potential energy increase? - ANSWERthe electron clouds repel each other
what is the cause of the attractive force between the two He atoms? - ANSWERthe
electron clouds of the He atoms may fluctuate randomly causing a transient dipole that
induces a dipole in other atoms which causes them to attract each other.
"elements are composed of a small indivisible, indestructible particles called atoms."
true or false? - ANSWERfalse, atoms have a sub-structure.
if you put bromine liquid in a pan on the stove and heat it up the bromine will boil. what
is that mechanism by which this happens? - ANSWERas more bromine molecules get
more energy, they can overcome the ELECTROSTATIC FORCES of attraction and the
bromine molecules can escape into the gas phase.
in an ISOLATED system, when two atoms collide, what is always true? - ANSWERthe
total energy of the system will not change
M1= 5g
M2= 5g
M3= 10g
M4= 10g
