WorksheetsUnit 4 Test
Total questions: 29
Worksheet time: 33mins
Columns on the periodic table are called (a) and rows on the periodic table are called (b) .
What is the best definition of Periodic Law?
There is never any repetition of chemical or physical properties of the elements
There is periodic repetition of chemical and physical properties of the elements
There is periodic repetition of atomic numbers of the elements
Mendeleev organized the elements by atomic mass in each of the rows. How are they actually organized?
Mass Number
Atomic Number
Number of Neutrons
Number of Electron Shells
What is true about a group on the periodic table?
They have similar electron configurations
They have similar properties
They have different properties
They have the exact same electron configurations
Which of the following is true when going across a period on the periodic table?
They decrease in atomic number
They increase in atomic number
Each element in a period has a similar electron configuration (example all s1)
Each element in a period has the same number of electron shells.
Match the element to the number of Valence Electrons it has.
Sulfur
6
Argon
8
Magnesium
2
Aluminum
3
Potassium
1
Select the area on the periodic table that represents the lanthanides and actinides
Select the area on the periodic table that represents the Transition Metals
Select the area on the periodic table that best represents the metalloids
Select the area on the periodic table that best represents a group of highly reactive metals.
In general, (a) are on the left side of the periodic table and (b) are on the right side of the periodic table.
Organize the properties or elements into their correct classification.
Usually solid at room temperature
Gold
Malleable
Usually gas at room temperature
Oxygen
Has characteristics of both metals and non-metals
Silicon
Do NOT conduct electricity
Match the Group to the number of Valence Electrons it has.
Alkali Metals
1
Alkali Earth Metals
2
Halogens
7
Noble Gases
8
What is a valence electron?
An electron that is on the outermost electron shell and DOES NOT participate in bonding
An electron that is on the outermost electron shell and DOES participate in bonding
An electron that is on the innermost electron shell and DOES participate in bonding
An electron that is on the innermost electron shell and DOES NOT participate in bonding
Which group of elements is usually non-reactive?
Alkali Metals
Transition Metals
Noble Gases
Halogens
If the lanthanides and actinides were in their correct position on the periodic table (not just in the convenient position), where would we find them?
In groups 6 and 7 between halogens and other non-metals
In periods 6 and 7 between transition metals and metalloids
In periods 4 and 5 between transition metals and alkali earth metals
In periods 6 and 7 between transition metals and alkali earth metals
Match the property to its definition:
The energy required to remove one of the valence electrons from a neutral atom
Ionization Energy
The ability an atom has to attract electrons in a bond
Electronegativity
The distance from the nucleus of an atom to the valence shell of an atom
Atomic Radius
Going from the top to the bottom of a GROUP on the periodic table, the atomic radius _________.
Increases, because there are more electron shells
Decreases, because there are more electron shells
Stays the same, because there is the same number of valence electrons
Decreases, because there are more protons
Going from the left to right of a PERIOD, the atomic radius ______.
Increases, because there are more protons
Decreases, because there are more protons pulling on the electrons
Stays the same, because there are the same number of electron shells
Increases, because there are more electrons
Reorder the following elements from SMALLEST (1) atomic radius to LARGEST (5) atomic radius
F
Cl
Br
I
At
Reorder the following from SMALLEST(1) to LARGEST(5) atomic radius
Br
Se
As
Ge
Ga
Going from the top to the bottom of a GROUP on the periodic table, the electronegativity ________.
Increases, because there are more electron shells
Decreases, because there is more distance between the electrons and the nucleus
Stays the same, because the size of the atom does not affect the electronegativity
Increases because there are more protons
Going from the left to the right of a PERIOD on the periodic table, the electronegativity __________.
Increases, because the distance between the electrons and the nucleus is smaller
Decreases, because there are more electrons blocking the other electrons
Stays the same, because there are the same number of electron shells
Decreases, because the neutrons diffuse the positive charges of the protons
Reorder the following from LOWEST (1) electronegativity to HIGHEST(5) electronegativity.
At
I
Br
Cl
F
Reorder the following from LOWEST (1) electronegativity to HIGHEST(5) electronegativity.
Ga
Ge
As
Se
Br
Going from the top to the bottom of a GROUP on the periodic table, the ionization energy _______.
Increases, because the larger the outside ring is, the more energy that is needed
Decreases, because the farther away the electrons are, the less the protons have a hold on the electrons
Increases, because there are more protons in the center
Stays the same, because the number of valence electrons does not change, so the energy doesn't change
Going from the left to the right of a PERIOD on the periodic table, the ionization energy...
Increases, because there are more protons pulling on the electrons
Decreases, because the atoms are smaller and easier to take apart
Stays the same, because there are the same number of electron shells
Decreases, because there are more neutrons diffusing the charge of the protons
Reorder the following elements from HIGHEST (5) ionization energy to LOWEST (1) ionization energy.
F
Cl
Br
I
At
Reorder the following elements from HIGHEST (5) ionization energy to LOWEST (1) ionization energy.
Br
Se
As
Ge
Ga
