CEM 141 EXAM 2 2026 ATOMIC STRUCTURE
AND PERIODIC TABLE PRACTICE SET
ANSWERS FULL SOLUTION
◉ If you ______ the mass the gravitational force will _____
Answer: increase and increase
◉ If you ______ the mass the gravitational force will ______
Answer: decrease and decrease
◉ If you ______ the distance the force will ________
Answer: increase and decrease
◉ If you _______ the distance the force will _______
Answer: decrease and increase
◉ gravitational forces are mediated by _____. They require __________
and are always ______
Answer: fields. 2 or more objects and are always attractive
◉ The electromagnetic force is mediated by _____ and ______ feilds
,Answer: electric and magnetic
◉ the _________ is much stronger than gravity and can be both
attractive and repulsive
Answer: electromagnetic
◉ The __________ stops us from falling through the earth
Answer: electrostatic
◉ If something is not moving either there is ________ acting on it or
the forces acting on it are ______
Answer: no force and equal
◉ When something is not moving it means the force of ____ is equal
to the ______ force
Answer: gravity and electromagnetic
◉ ____ is the part of the universe you are looking at
Answer: system
◉ ______ everything else in the universe
Answer: surrondings
,◉ _____ is never lost it is either transferred or transformed
Answer: energy
◉ two types of Energy?
Answer: kinetic and potential
◉ ?= 1/2mv2
Answer: kinetic energy
◉ energy is associated with the position of a system of objects in a
_____
Answer: field
◉ You can't have __________ without a field or 2 or more objects
Answer: potential energy
◉ _____ is stored in the field not the object
Answer: potential energy
◉ Explain the process of a London Dispersion force?
, Answer: there is an instantaneous uneven distribution of electrons
in and atom. Which induces a dipole on a neighboring atom. Which
results in partial charges and an attractive force.
◉ On an PE graph the distance tells you what? what does the depth
tell you?
Answer: distance tells you how far away the atoms nuclei are and
when they are most stable. And the depth tells you how much
energy is needed to overcome or break the LDF
◉ the _____ increases with the size of a particle
Answer: LDF
◉ the ____ increases with the surface area
Answer: LDF
◉ The deeper the well the __________ the interaction
Answer: stronger
◉ The deeper the well the __________ the interaction
Answer: stronger and longer
◉ The stronger the interaction the _______ the boiling point
AND PERIODIC TABLE PRACTICE SET
ANSWERS FULL SOLUTION
◉ If you ______ the mass the gravitational force will _____
Answer: increase and increase
◉ If you ______ the mass the gravitational force will ______
Answer: decrease and decrease
◉ If you ______ the distance the force will ________
Answer: increase and decrease
◉ If you _______ the distance the force will _______
Answer: decrease and increase
◉ gravitational forces are mediated by _____. They require __________
and are always ______
Answer: fields. 2 or more objects and are always attractive
◉ The electromagnetic force is mediated by _____ and ______ feilds
,Answer: electric and magnetic
◉ the _________ is much stronger than gravity and can be both
attractive and repulsive
Answer: electromagnetic
◉ The __________ stops us from falling through the earth
Answer: electrostatic
◉ If something is not moving either there is ________ acting on it or
the forces acting on it are ______
Answer: no force and equal
◉ When something is not moving it means the force of ____ is equal
to the ______ force
Answer: gravity and electromagnetic
◉ ____ is the part of the universe you are looking at
Answer: system
◉ ______ everything else in the universe
Answer: surrondings
,◉ _____ is never lost it is either transferred or transformed
Answer: energy
◉ two types of Energy?
Answer: kinetic and potential
◉ ?= 1/2mv2
Answer: kinetic energy
◉ energy is associated with the position of a system of objects in a
_____
Answer: field
◉ You can't have __________ without a field or 2 or more objects
Answer: potential energy
◉ _____ is stored in the field not the object
Answer: potential energy
◉ Explain the process of a London Dispersion force?
, Answer: there is an instantaneous uneven distribution of electrons
in and atom. Which induces a dipole on a neighboring atom. Which
results in partial charges and an attractive force.
◉ On an PE graph the distance tells you what? what does the depth
tell you?
Answer: distance tells you how far away the atoms nuclei are and
when they are most stable. And the depth tells you how much
energy is needed to overcome or break the LDF
◉ the _____ increases with the size of a particle
Answer: LDF
◉ the ____ increases with the surface area
Answer: LDF
◉ The deeper the well the __________ the interaction
Answer: stronger
◉ The deeper the well the __________ the interaction
Answer: stronger and longer
◉ The stronger the interaction the _______ the boiling point
