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WorksheetsUnit 5Electrical forces that dictate the Periodic trends.
Total questions: 46
Worksheet time: 56mins
Which of the following elements has the highest ionization energy?
Sodium (Na)
Magnesium (Mg)
Aluminum (Al)
Chlorine (Cl)
Explain why ionization energy generally increases across a period from left to right.
Due to increased nuclear charge and decreased atomic radius
Due to decreased nuclear charge and increased atomic radius
Due to increased electron shielding
Due to decreased electron shielding
Predict the trend in electronegativity as you move across a period from left to right.
It decreases
It increases
It remains constant
It fluctuates
Compare the electronegativity of fluorine and oxygen and explain the reason for the difference.
Fluorine is more electronegative due to its smaller atomic radius
Oxygen is more electronegative due to its larger atomic radius
Both have the same electronegativity
Fluorine is less electronegative due to its larger atomic radius
Which element has the largest atomic radius in the third period?
Sodium (Na)
Magnesium (Mg)
Silicon (Si)
Argon (Ar)
Explain why atomic radius decreases across a period from left to right.
Due to increased nuclear charge pulling electrons closer
Due to decreased nuclear charge allowing electrons to spread out
Due to increased electron shielding
Due to decreased electron shielding
Apply Coulomb's law to explain the force of attraction between a sodium ion and a chloride ion in sodium chloride.
The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them
The force is inversely proportional to the product of the charges and directly proportional to the square of the distance between them
The force is directly proportional to the distance between them
The force is independent of the distance between them
The trend for ionization energy states that the energy level will (a) when going down a group (family). When going across the table (left to right), the energy will (b) .
Across a period in the periodic table (left to right), ionization energy generally ...
decreases
decreases, then increases
increases
remains constant
Match the trend with the correct definition
The strength of attraction between an atom's nucleus and the electrons in that atom.
Electronegativity
The distance from the center of an atom and the furthest electron. This is a measure of an atom's size.
Atomic Radius
The energy required to remove an electron from an atom.
Ionization Energy
The likelihood that that an atom will participate in a chemical reaction
Reactivity
Match the following metals with their family name.
Gold (Au)
Transition Metal
Calcium (Ca)
Alkaline Earth Metal
Cesium (Cs)
Alkali Metal
Chlorine (Cl)
Halogen
What charge is the proton?
positive
no charge (neutral)
negative
Senaida-charged
How do you describe the charges between a proton and an electron?
A proton has a larger charge than an electron. And they are oppositely charged.
An electron has a larger charge than a proton. And they have the same charge.
A proton has the same charge as an electron. And they are oppositely charged.
An electron has the same charge as a proton. And they have the same charge.
What do you call the process of charging a conductor by bringing it near another charged object?
induction
polarization
neutralization
conduction
A negatively charged plastic comb is brought close to, but does not touch, a small piece of paper. If the comb and the paper are attracted to each other, the charge on the paper
must be positive
must be negative
may be neutral or negative
may be neutral or positive
If a balloon is rubbed on a sweater, what is this charging method called and what happens to the electrons if the balloon has more electron affinity?
Friction- electrons move from sweater (+) to balloon (-)
Friction- electrons move from balloon (+) to sweater (-)
Conduction- electrons move from sweater (+) to balloon (-)
Conduction- electrons move from balloon (+) to sweater (-)
Which graph best represents the relationship between the magnitude of the electrostatic force and the distance between two oppositely charged particles?
As two oppositely charged particles approach each other, what happens to the electrical force between them?
The attractive force increases
The magnitude of the electric force decreases
The repulsive force increases
The magnitude of their charges increases
A balloon is rubbed on a student's head. What occurs because of this?
Charged particles on the balloon are destroyed
Positively charged particles move from head to balloon
Charged particles from the balloon are released into the air
Negatively charged particles move from head to balloon
Which is the value of the constant in Coulomb's equation?
k = 9·10-9
k = 9.8
k = 6.67·10-11
k = 9 ·109
Objects with opposite charges produce an ________ force.
repulsive (moves away)
attractive (moves towards)
Objects with the same charges produce a ________ force.
repulsive (repel away)
attractive (move towards)
The Affect of Electric fields surrounding particles become stronger the _______________ they are from each other.
Farther
Closer
which is the field for opposite charges
Coulomb's law also says if distance increases, then force
decreases
disapears
destroyed in a heartbeat
doubles
An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________
positively charged because it has excess electrons
negatively charged because it has excess electrons
positively charged because it has a deficiency of electrons
negatively charged because it has a deficiency of electrons
When an object gains electrons it becomes __________
Neutral
Positively charged
Negatively charged
Which diagram represents the electric fields of a negative point charge, shown by º
Which diagram correctly shows the field lines between two like charges?
A
B
Both
Neither
Which diagram correctly shows the electric field around a negative charge?
A
B
they are both positive
