Chemical Bonds
how many hydrogen atoms are present in one molecule of ammonium acetate, NH4C2H3O2?
7
How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
8
what is the total number of atoms in the compound Ca(Cl03)2
9
what is the correct chemical formula for Arsenic pentafluoride?
AsF5
what type of bond is formed in the following compound P2O5
Covalent
the attraction that forms between atoms when they share electrons
Covalent bond
Particles formed from the covalent bonding of atoms are called ions? (T/F)
False
The formula SO42- stands for ammonium. (T/F)
False
the properties of a compound are the same as the properties of the elements making up the compound? (T/F)
False
what is the correct chemical formula for permanganic acid?
HMnO4
What type of bond is formed in the compound CaCl2
Ionic
what is the name of PbO2?
Lead oxide
an electron-dot that is used to show how electrons are arranged in molecules
Lewis Structure
Which of the following is the least electronegative Mg or Al
Mg
What is the correct formula for magnesium nitrate?
Mg(NO3)2
what is the correct formula for magnesium oxide?
MgO
Which group of elements is the most stable?
Noble gases, Group 18
the rule that states that atoms gain,lose or share electrons to achieve a stable configuration of 8 valence electrons
Octet Rule
a polyatomic ion in which an element (usually a nonmetal) is bonded to one or more oxygen atoms
Oxyanion
What type of bond is the following compound Na2CO3?
Polyatomic
Which of the following is least electronegative Si or Cl
Si
Why do the noble gases NOT form compounds readily?
Their outer energy levels are completely filled with electrons.
An elements oxidation number indicates how many electrons the element must gain, lose, or share to become stable. (T/F)
True
Molecules are neutral? (T/F)
True
when an atom gains or loses electrons, the charged particle that results is called an ion? (T/F)
True
The abbreviation for Valence Shell Electron Pair Repulsion Model
VSEPR
the region around an atoms that defines an electron's probable location
atomic orbital
the elements that make up a compound and the exact number of atoms of each element in a unit of the compound can be shown in a _________
chemical formula
A chemical bond that occurs when atoms share electrons is a(n) ____ bond.
covalent bond
what is the correct name for C2BR4?
dicarbon tetrabromide
What is the correct name for N2O3?
dinitrogen trioxide
what is the correct name for P2O5
diphosphorus pentoxide
When hydrogen reacts with the active metals, it forms a chemical bond by ____.
gaining one electron
Elements that form salts by combining with metals are ____.
halogens
What kind of chemical bond is formed when an equal exchange of electrons occurs?
ionic
What is the name of a binary compound made up of lithium and chlorine?
lithium chloride
What is the name of MgI2?
magnesium iodide
Elements in which the outer electrons are NOT held tightly are most likely to form ____ bonds.
metallic
The neutral particle that forms as a result of electron sharing
molecule
most covalent bonds form between ______________
nonmetallic elements
the ____________ tells you how many electrons an atom must gain.lose. or share to become stable.
oxidation number
any acid that contains hydrogen and an oxyanion
oxyacid
A group of covalently bonded atoms that acts together as one charged atom is a ____.
polyatomic ion
what is the correct name for K2SO4?
potassium sulfate
What is the name of the compound with the formula NaCl?
sodium chloride
in a chemical formula, the number of each type of atom in the compound is shown by numbers called ___________
subscripts
what is the correct name for SO2?
sulfur dioxide
The oxidation number of an atom is shown with a ___________
superscript
Explain what happens to the electrons in a covalent bond.
the atoms share the electrons
the sum of the oxidation numbers in a neutral compound is always ___________.
zero
