WorksheetsMcWilliams Unit 3 Assessment Review
Total questions: 69
Worksheet time: 3hrs 26mins
The electrons in a polar covalent molecule are shared...
Evenly
Unevenly
Electrons are not shared
None of the Above
The electrons in a nonpolar covalent molecule are shared...
Evenly
Unevenly
Electrons are not shared
None of the Above
The electrons in an ionic molecule are shared...
Evenly
Unevenly
Electrons are not shared
None of the Above
In a polar covalent bond, the electrons gather around...
The atom with the Greatest Electronegativity
The atom with the Lowest Electronegativity
Each atom Equally
None of the Above
In a nonpolar covalent bond, the electrons gather around...
The atom with the Greatest Electronegativity
The atom with the Lowest Electronegativity
Each atom Equally
None of the Above
The polarity of a bond is determined by...
The sum of the electronegativities of the two atoms
The difference in the electronegativities of the two atoms
The charges of the atoms
None of the Above
Partial charges are present in which type of bond?
Ionic
Nonpolar Covalent
Polar Covalent
Both Polar Covalent & Ionic
In a polar covalent bond, which atom will have a partial positive charge? (choose 2 correct answers)
The atom that attracts fewer electrons
The atom with the greater electronegitivity
The atom that attracts more electrons
The atom with the lower electronegativity
A diatomic molecule like O2 is always _____ because electrons are shared _____
nonpolar; unequally
polar; equally
nonpolar; equally
polar; unequally
What must the difference in electronegativity between two atoms be in order for the bond between them to be nonpolar covalent?
less than 0.5
greater than 1.7
between 0.5 and 1.7
exactly 0
Order the types of bonds based on the charge of their molecules. (lowest amount of charge to greatest)
Polar Covalent --> Ionic --> Nonpolar Covalent
Ionic --> Nonpolar Covalent --> Polar Covalent
Ionic --> Polar Covalent --> Nonpolar Covalent
Nonpolar Covalent --> Polar Covalent --> Ionic
the ability of an atom to attract electrons in a chemical bond
the number of electrons an atom has in its outer shell
the number of negative charges in a chemical bond
the popularity of an atom based on its attractiveness
iron
What is the difference in electronegativity for HBr?
(a)
What type of chemical bond will lithium fluoride have?
Nonpolar covalent
Polar covalent
Ionic
The electronegativity difference in the bonds of CH4 is:
(a)
If the difference in electronegativity of two atoms is 0.8, the bond is ________.
polar covalent
nonpolar covalent
ionic
What type of bond would form between O and O?
Polar Covalent
Non-Polar Covalent
Ionic
The bond between C and Cl is polar covalent. That means
there is a pair of electrons shared equally between them
there is a pair of electrons shared unequally between them
an electron will be stolen from one and given to the other
The bond between C and H is non-polar covalent. That means
there is a pair of electrons shared equally between them
there is a pair of electrons shared unequally between them
an electron will be stolen from one and given to the other
What type of bond contains atoms with "partial" charges?
Polar Covalent
Non-Polar Covalent
Ionic
In a polar covalent bond, the electrons gather around...
The atom with the greatest electronegativity
The atom with the lowest electronegativity
Each atom equally
Determine the polarity of the given molecule.
Polar Molecule
Nonpolar Molecule
Determine the polarity of the given molecule.
Nonpolar Molecule
Polar Molecule
Determine the polarity of the given molecule.
Polar Molecule
Nonpolar Molecule
Click all the areas where it's partially negative.
Click all the regions where it's electron-deficient.
Choose the region where it's partially negative.
Subatomic particles with a negative charge
Electrons
Neutrons
Protons
Quarks
The smallest particle of an element.
Element
Molecule
Atom
These are found in the nucleus and have a neutral charge.
proton
electron
neutron
The number 16 for the atomic element sulfur is the
ionic number
isotope
atomic mass
atomic number
How many protons does sulfur have?
32
16
48
12
How many electrons does sulfur have
16
32
48
12
In an atom, the number of protons is equal to the number of ____________.
energy levels
neutrons
neurons
electrons
How many neutrons does a Hydrogen atom have?
1
2
3
Unknown; the Periodic Table does not give us neutrons
How many electrons does an Iodine atom have?
53
126
73
179
How many neutrons does an Oxygen atom have?
8
16
15.999
Unknown; the Periodic Table does not give us neutrons
How many electrons does a Copper atom have?
63
29
92
34
How do covalent bonds form?
By donating and receiving valence electrons between atoms.
Scientists still aren't sure.
Opposite slight charges attract each atom in the compound.
Sharing valence electrons between atoms
What two types of atoms make a covalent bond?
2 Nonmetals
1 Metal and 1 Nonmetal
2 Metals
2 Noble Gases
Ionic Bonds
metal with nonmetal
nonmetal with nonmetal
What kind of bond will form between Hydrogen and Oxygen?
ionic
covalent
metallic
no bond
Valence electrons are transferred
Ionic bonds
Covalent bonds
Valence electrons are shared
Ionic bonds
Covalent bonds
The chemical bond between a non-metal and another non-metal will be a ________ bond.
metal
ionic
covalent
polar
This could be the dot diagram of
Mg
Cl
C
O
What is the goal of the Lewis Dot Structure?
To determine the electron position.
To show the element's valence electrons & bonding capabilities.
To find the atomic mass of an element.
To search for the number of electrons in an individual atom.
Which is the correct molecular structure for carbon dioxide CO2?
