Chemistry chapter 3
The formula Ca(NO3)2 tells us that one unit of this compound is composed of _____ calcium atom(s) ______ nitrogen atom(s) and _____ oxygen atom(s)
1,2,6
What is the predicted bond angle for a molecule with a trigonal planar electron-pair geometry
120
Identify the ionic compound among the following
AlCl3
The correct name for the compound CuCO3 is
Copper(1) carbonate
Which of the following is the correct formula for copper (II) oxide?
Cu2O
Which one of the following is the most polar bond?
B-O
Which of the following is a polar molecule?
CH3Cl
Which of the following molecules dissolves in water?
CH3OH
The correct formula for the compound containing rhinos Ca +2 and Br- is
CaBr2
What is the correct formula for the ionic compound formed between calcium and sulfur?
CaS
The correct name for the compound Ca3N2 is
Calcium nitride
The correct name for the compound Ca3(PO4)2 is
Calcium phosphate
In a Lewis structure, the electrons that at complete an elements octet, but are not located between two atoms are referred to as
Lone pair electrons
The correct formula for the compound containing the ions Mg +2 and N -3 is
Mg3N2
Which species is not planar?
NH3
Which species is not planar?
NO3 -1
The correctly written formula for the compound sodium oxide is:
Na2O
What is the overall polarity of methane
Nonpolar covalent
Considering the following isolated bonds, which listing orders the bonds from the most to the least ionic character?
OC, HN, NC
What does it mean when a molecule is said to be Polar?
One end of the molecule is slightly negative while the other end is slightly positive
Which of the following elements is most likely to form an ionic compound with K?
Oxygen
What is the correct name of the covalent molecule PF5?
Phosphorous pentafluoride
The correct formula for the polyatomic ion, sulfate is
SO4 -2
The atoms in a covalent t compound are bonded by
Shared valence electrons
Which is the correct formula for tin(IV) chromate?
Sn(CrO4)2
The correctly written formula for the compound strontium chloride is
SrCl2
What is the correct name for SO3?
Sulfite
Which of the following does not exist as a diatomic molecule?
Sulfur
What is the name of SO3?
Sulfur trioxide
The shape of NH4+ is best described by:
Tetrahedral
Electronegativity is
The ability of an atom to attract electrons to itself in a chemical bind
What is the name of NH3?
Ammonia
Which is the formula forbthe binary compound of barium and fluoride
BaF2
Which of the following is the correct formula for the binary compound barium and fluorine?
BaF2
The shape of a water molecule is
Bent
Intermolecular forces are forces _____
Between molecules
Which element has the frees test electronegativity?
Cl
What is the name for the formula Cl2O?
Dichlorine monoxide
What is the correct name for the compound N2O5?
Dinitrogen pentoxide
Which of the following is a polar molecule?
H2O
The chemical name for SO3 -2 is sulfite ion. Therefore, the name of H2SO3 is:
Hydrogen sulfite
Which pair of elements is most likely to form an ionic compound if allowed to react together?
K and Br
The correct formula for potassium dichromate is
K2Cr2O7
The correct chemical formula for potassium nitrite is
KNO2
What is the correct formula for the compound manganese dioxide?
MnO2
What is the formula for manganese dioxide?
MnO2
Which element is most likely to form three covalent bond?
N
What is the electron pair geometry for a molecule with three electron pairs around the central atom?
Trigonal planar
A covalent bond formed when two atoms share a total of 6 electrons between them is a _____ bond
Triple
