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WorksheetsUnit 5 Review
Total questions: 35
Worksheet time: 9hrs 45mins
Which element is classified as a Halogen?
Neon (Ne)
Chlorine (Cl)
Oxygen (O)
Calcium (Ca)
Chlorine tends to form a(n) ____ with a ____ charge.
cation, +1
anion, −1
cation, −1
anion, +2
When sulfur becomes an ion, it will ____ and form a ____ charge.
gain electrons; −2
lose electrons; +2
gain electrons; +2
lose electrons; −2
Elements in the same column (group) share similar chemical behaviors because they have the same number of:
energy levels
valence electrons
protons
neutrons
An element that is brittle, dull, and does not conduct electricity is most likely a:
Metal
Transition Metal
Metalloid
Nonmetal
Which element is most chemically similar to Calcium (Ca)?
Magnesium (Mg)
Potassium (K)
Sulfur (S)
Scandium (Sc)
The number of valence electrons determines how an element:
reacts with other elements
changes its mass
emits light
gains neutrons
The modern periodic table arranges elements by increasing atomic number, an idea proposed by:
Mendeleev
Bohr
Moseley
Dalton
Which type of element is typically lustrous, ductile, and a good conductor?
Nonmetal
Metalloid
Metal
Halogen
An atom of Gallium (Ga) typically forms an ion with what charge?
+1
+3
−3
+5
All elements in Group 1 (Alkali Metals) share which property?
They have a single electron in their outermost shell
Two energy levels
They have high melting points
Low reactivity
Which of the following atoms has the least ionization energy?
Potassium (K)
Fluorine (F)
Aluminum (Al)
Oxygen (O)
A pale-yellow element that is brittle and does not conduct electricity is likely a:
Metal
Non-metal
Transition Metal
Noble Gas
As you move down a column, atomic radius generally:
increases due to more energy levels
decreases due to stronger attraction
stays constant
increases due to fewer protons
As you move across a period, atomic radius generally:
increases due to more energy levels
decreases due to stronger effective Nuclear charger
stays constant
increases due to fewer protons
Which element has the largest atomic radius?
Sodium
Lithium
Potassium
Fluorine
Which is the most reactive metal listed below?
Sodium
Magnesium
Cesium
Aluminum
Which type of bond forms when one atom completely transfers its electrons to another atom?
Covalent
Polar covalent
Ionic
Metallic
Why does ionization energy generally increase across a period?
Because atomic radius increases significantly
Because additional electron shielding overcompensates for nuclear charge
Because increasing effective nuclear charge holds electrons more tightly
Because metals become more reactive
What diatomic element exists in period 5? Enter only the symbol.
(a)
Enter only the symbol. The most reactive metal in period 4.
(a)
Enter only the symbol. Element with 2 energy levels and 5 valence electrons.
(a)
Enter only the symbol. Metalloid in period 3
(a)
Enter only the symbol. Noble gas in period 2
(a)
Enter only the symbol. Largest atom in period 3
(a)
Enter only the symbol. Most electronegative element in period 2
(a)
Enter only the symbol. Element with highest ionization energy in group 2.
(a)
Enter only the symbol. Most reactive element in group 17
(a)
Arrange the following in order of increasing electronegativity (least to greatest) (O, S, Se)
(a) , (b) , (c)
Match the following:
The ability to react
Reactivity
The size of the atom
Atomic Radius
The energy required to remove an electron
Ionization Energy
The tendency to attract an electron in a bond
Electronegativity
Which of the following is the most reactive metal?
Which of the following is the most reactive non-metal?
Match the correct ion charge to the group number.
Label the groups on the PT correctly.
Match the element to the charge on its ion.
F
-1
Al
+3
N
-3
Na
+1
O
-2
