Chemical Bonds, Balancing chemical equations, balancing chemical equations
__CaO + __H₂O → __Ca(OH)₂
1, 1, 1
__BaCl₂ + __Na₂SO₄ → __NaCl + __BaSO₄
1, 1, 2, 1
__Sn + __HF → __SnF₂ + __H₂
1, 2, 1, 1
__CS₂ + __O₂ → __CO₂ + __SO₂
1, 3, 1, 2
Complete combustion of methane gas. __CH₄ + __O₂ → __CO₂ + __H₂O
1,2,1,2
__Na + __F₂ → __NaF
2, 1, 2
__Na + __MgF₂ → __NaF + __Mg
2, 1, 2, 1
__MgS + __O₂ → __MgO + __SO₂
2, 3, 2, 2
__Fe +__O₂ → __Fe₂O₃
4, 3, 2
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
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.
when an atom gains or loses electrons, the charged particle that results is called an ion? (T/F)
True
the region around an atoms that defines an electron's probable location
atomic orbital
keep mass of products and reactants the same by adjusting coefficients as necessary
balancing chemical equations
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
chemical equation
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 process during which chemical bonds between atoms are broken and new ones are formed. Producing one or more different substances.
chemical reaction
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
coefficient
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
During any chemical reaction, the mass of the products is always equal to the mass of the reactants
law of conservation of mass
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
any acid that contains hydrogen and an oxyanion
oxyacid
what is the correct name for K2SO4?
potassium sulfate
A chemical substance formed as a result of a chemical reaction
product
A chemical substance that is present at the start of a chemical reaction.
reactant
What is the name of the compound with the formula NaCl?
sodium chloride
A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
subscript
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
Makes, creates, produces; Arrow in chemical equation
yields
the sum of the oxidation numbers in a neutral compound is always ___________.
zero
