Chapter 8 Covalent Bonds Flashcards
What is a covalent bond in which 3 pairs of electrons are shared by 2 bonded atoms?
a. electronegative
b. triple covalent bond
c. polar bond
b. triple covalent bond
What is the tendency of an atom to attract electrons to itself?
a. nonpolare covalent bond
b. polar bond
c. electronegative
c. electronegative
What is a covalent bond involving 2 pairs of electrons that are shared by two bonded atoms?
a. double covalent bond
b. polar bond
c. nonpolar covalent bond
a. double covalent bond
What is it when electrons are shared equally between two atoms?
a. molecule
b. nonpolar covalent bond
c. sutructural formula
b. nonpolar covalent bond
What are particles that results when 2 or more atoms are covalently bonded?
a. double covalent bond
b. polar bond
c. molecule
c. molecule
What is it called when electrons are NOT shared equally between two atoms?
a. nonpolar covalent bond
b. polar covalent bond
c. single covalent bond
b. polar covalent bond
What is a covalent bond in which 1 pair of electrons are shared by 2 bonded atoms?
a. structural formula
b. electronegative
c. single covalent bond
c. single covalent bond
What is the chemical formula that shows the arrangement of atoms of molecules?
a. structural formula
b. double covalent bond
c. polar bond
a. structural formula
Which one of the following exists as a diatomic molecule?
a. Na
b. Ar
c. Cl
c. Cl
Which molecule has single covalent bonds?
a. F2
b. N2
c. S2
a. F2
Why do atoms share electrons? To acquire the electron configuration of: a. Alkaline earth metals b. Noble Gas c. Halogens
b. Noble Gas
What is the bond IF the bonding pair of electrons is unequally shared between two atoms?
a. nonpolar
b. polar
c. Ionic
b. polar
Which of the following would NOT have covalent bonds?
a. N2O4
b. NO2
c. KO2
c. KO2
Be able to draw the elctron dot diagrams for covalent molecules with a SINGLE COVALENT BOND?
See Mrs. Krumpelman for help
Draw the structural formuala for two elements that contain a double bond
See Mrs. Krumpelman for help
Be able to calculate the elctronegativity difference between pairs of elements and tell the type of bond.
Ex: K and S
2.5 - .8 = 1.7 / Very Polar
Compare the behavior of bonding electrons in a non-polar bond with that of the electrons in a polar bond.
Non-polar - - when the atoms are the same - the bonding electrons are shared equally
Polar - - they atoms are joined by covalent bonds and the bonding electrons are NOT shared equally
Draw a water molecule - indicate the postive and negative ends of the molecule and why are they bend.
See Mrs. Krumpelman
Be able to discuss monoatomic and diatomic
Monoatomic becasue it already has 8 ve- and is already octet
Diatomic needs to share with another to become an octet or have 8 ve-
Be able to count how may UNSHARED pairs are on a dot diagram.
See Mrs. Krumpelman
Be able to explain why something is called a rsonance structure.
When a structure has the ability to flip/flop the structure and it will remain the same
What is the difference between ionic bond and a covalent bond?
ionic bonds the e- are transferred and in covalent bonds the e- are shared
Be able to draw the 4 shapes of molecules and label each
See Mrs. Krumpelman
