Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
46 Cards in this Set
- Front
- Back
- 3rd side (hint)
The overall charge of a formula unit for an ionic compound
|
is allways zero.
|
a. is allways zero
b. is allways negative c. is always positive d. may have any value |
|
In a crystal lattice of an ionic compound,
|
ions are surrounded by ions of the opposite charge.
|
a.Ions of a given charge are clustered togeatehr, far from ions of the opposite charge.
b.ions are srrounded by ions of the opposite charge. c.a sea of electrons surrounds the ions. d.neutral molecules are present. |
|
What is the relationship between lattice energy and the strength of teh attractive force holding ions in place?
|
The more negative the lattice energy is, the greater the force is.
|
See page 45.
|
|
In electron transfer involving a metallic atom and a nonmetallic atom during ion formation, which of the following is correct?
|
The nonmetallic atom gains electrons from the metallic atom.
|
A. The metallic atom gains electrons from the nonmetalic atom.
B. The nonmetalic atom gains electrons from the metallic atom. C. Both atoms gain electrons. D. Neither atom gains electrons. |
|
True or false: The cyrstal lattice of ionic compuonds affects their melting and boiling points.
|
True.
|
|
|
True and False: The lattice energy is the energy required to separate the ions of an ionic compund.
|
True
|
|
|
In what form do elements such as hydrogen, nitrogen, and oxygen normally occur?
|
as molecules containing two atoms.
|
a. as single atoms
b. as molecules containing two atoms c. as molecues containing three atoms d.as molecules containing four atoms |
|
How many electrons are shared in a double covalent bond?
|
four
|
a. none
b. one c. two d. four |
|
Bond length is the distance between
|
the nuclei of two attacthed atoms.
|
a. two molecules of the same substance.
b. the electrons in two attached atoms. c. the nuclei of two attached atoms. d. the orbitals of two attached atoms. |
|
Which of the following relationships relating to bond length is generally correct?
|
the shorter the bond, the stronger the bond.
|
a. the shorter the bond, the stronger the bond.
b. the shorter the bond, the weaker the bond. c. the shorter the bond, the fewer the electrons in it d. the sorter the bond, the lower the bond dissociation energy. |
|
True or false: The prefix hepta- indicates six atoms.
|
False
|
p50
|
|
True or false: The prefix hexa- indicates six atoms.
|
True
|
p50
|
|
Prefix for 1 atom.
|
mono-
|
|
|
Prefix for 2 atoms.
|
di-
|
|
|
Prefix for 3 atoms.
|
tri-
|
|
|
Prefix for 4 atoms.
|
tetra-
|
|
|
Prefix for 5 atoms.
|
penta-
|
|
|
Prefix for 6 atoms.
|
hexa-
|
|
|
Prefix for 7 atoms.
|
hepta-
|
|
|
Prefix for 8 atoms.
|
octa-
|
|
|
Prefix for 8 atoms.
|
octa-
|
|
|
Prefix for 9 atoms.
|
nona-
|
|
|
Prefix for 10 atoms.
|
deca-
|
|
|
Molecular compund name of water:
|
dihydrogen monoxide
|
H2O
|
|
Molecular compund name of ammonia. (NH3)
|
nitrogen trihydride
|
NH3
|
|
An oxacid is?
|
Any acid that contains hyrdrogen and an oxyanion.
|
|
|
What is the molecular compund name of HBrO3?
|
Bromic acid
|
|
|
What is the molecular compund name of H2CO3?
|
Carbonic acid
|
|
|
N2O4
|
Dinitrogen tetroxide
|
|
|
HBr
|
Hydrobromic acid
|
|
|
True or false: A structural formula shows the arrangement of teh atoms in a molecule.
|
True
|
|
|
True or false: The electrons in a coordinate covalent bond are donated by both the bonded atoms.
|
False
|
|
|
The VSEPR model is used mainly to
|
determine molecular shape.
|
a. determine molecular shape.
b. write resonance structures. c. determine ionic charge. d. measure intermolecular distances. |
|
The bond angle is the angle between
|
two terminal atoms and the centeral atom.
|
a. the sigma and pi bonds in a double bond.
b. the nucleus and the bonding electrons. c. two terminal atoms and the central atom. d. the orbitals of a bonding atom. |
|
The shape of a molecule whose central atom has four pairs of bonding electrons is
|
trigonal pyramidal
|
a. tetrahedral
b. trigonal planar. c. trigonal pyramidal. d. linear. |
|
The shape of a molecule that has two covalent single bonds and no lone pairs on teh central atom is
|
linear.
|
a. tetrahedral.
b. trigonal planar. c. trigonal pyramidal. d. linear. |
|
The shape of a molecule that has three single covalent bonds and one lone pair on the central atom is
|
trigonal pyramidal
|
a. tetrahedral.
b. trigonal planar. c. trigonal pyramidal. d. linear. |
|
Unequal sharing of electrons between two bonded atoms always indicates
|
a polar moecule.
|
a. a nonpolar covalent bond.
b. an ionic bond. c. a polar covalent bond. d. a polar molecule. |
|
When electronegatives of two bonded atoms differ greatly, the bond is
|
polar covalent.
|
a. polar covalent.
b. coodinate covalent. c. polar covalent. d. ionic |
|
Waht is the electronegativity difference that usually is the dividing line between covalent and ionic bonds?
|
1.7
|
a. 1.0
b. 1.7 c. 2.7 d. 4.0 |
|
A nonpolar covalent bond is one in which
|
electrons are shared equally.
|
a. electrons are transferred.
b. electrons are shared unequally. c. electrons are shared equally. d. btoh electrons are provided by the same atom. |
|
Molecules containing only polar covalent bonds
|
may or may not be polar.
|
a.are always polar.
b. may or may not be polar. c. are always ionic. d. are always nonpolar. |
|
What facvtor other than electronegativity determines whether a molecule as a whole is polar or not?
|
its geometry.
|
a. temperature
b. its geometry c. its physical state d. its mass |
|
Which of the following correctly descrives the compound water, H2O?
|
polar overall, with polar covalent bonds
|
a. ionic
b. nonpolar overall, with polar covalent bonds c. polar overall, with nonpolar covalent bonds d. polar overall, with polar covalent bonds |
|
Which of the following correctly describes the comopound carbon tetrachloride, CCl4?
|
nonpolar overall, with polar covalent bonds.
|
a. ionic
b. nonpolar overall, with polar covalent bonds c. polar overall, wdith nonpolar covalent bonds d. polar overall, with polar covalent bonds |
|
A molecule of ammonia, NH3, is
|
polar becuase there is an electronegativity difference and the molecule is trigonal pyramidal.
|
a. nonpolar becuase it is linear.
b. polar beucase it is linear. c. nonpolar becuase there is no electronnegatvity difference. d. polar becuase there is an electronegativity difference and the molecule is trigonal pyramidal. |