CHEM TEST 3.1-3.5
Provide the formula for the following ionic compound: lithium carbonate
Li2CO3
Identify the following compound by name: dinitrogen monoxide
N2O
Identify the following compound by name: dinitrogen tetroxide
N2O4
Identify the following anion using the cation in the compound given: Calcium nitrite is Ca(NO2)2, so nitrite is ______.
NO2-
Provide the formula for the following ionic compound: sodium bicarbonate
NaHCO3
Provide the formula for the following ionic compound: sodium hydrogen carbonate
NaHCO3
Ionic compounds are typically _____ at room temperature, whereas molecular compounds are ___X___.
Solids
In a liquid state, water molecules are held together by the mutual attraction of positively charged regions of the molecules with negatively charged regions.
True
Identify common binary covalent compounds according to their common, memorized names. Identify the following binary covalent compound according to its common, memorized name: H2O
Water
Name the ions as you would if writing them in a name: Zn2+
Zinc ion
When writing the name of monatomic cations, start with the name of the ___X___. If more than one charge is possible, use _______ to indicate charge.
a Roman numeral
In an elemental chlorine molecule, Cl2, two chlorine atoms equally share a pair of electrons in _____ bond.
a nonpolar covalent
In a hydrogen bromide molecule, HBr, the electron pair forming the bond is not shared evenly between the atoms. The bromine atom attracts more of the electron density to itself than the hydrogen atom does, giving the bromine atom a ___X___ charge. Thus, the hydrogen and bromine atoms share a pair of electrons in _____ bond.
a polar covalent
Name the ions as you would if writing them in a name: Al3+
aluminum ion
Provide the name for the following ionic compound: NH4OH
ammonium hydroxide
Ionic compounds (salts) have structures that maximize the electrostatic _______ between anions and cations, while minimizing the electrostatic ___X___ between anions and anions, and cations and cations.
attractions
Provide the name for the following ionic compound: BN
boron nitride
Provide the name for the following ionic compound: Ca2C
calcium carbide
Name the following binary covalent compound using the accepted systematic nomenclature system: N2O3
dinitrogen trioxide
Name the following binary covalent compound using the accepted systematic nomenclature system: HI
hydrogen iodide
When metals react with nonmetals, they generally form _______ compounds. Nonmetals react with nonmetals to form __X___ compounds.
ionic
Name the ions as you would if writing them in a name: Fe2+
iron(II) ion
Name the ions as you would if writing them in a name: Mg2+
magnesium ion
Provide the name for the following ionic compound: HgS
mercury(II) sulfide
When writing the name of monatomic cations, start with the name of the ______. If more than one charge is possible, use ___X___ to indicate charge.
metal
Identify the following binary covalent compound according to its common, memorized name: CH4
methane
Classify the following as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound: Salt Water
mixture
When metals react with nonmetals, they generally form ___X___ compounds. Nonmetals react with nonmetals to form _____ compounds.
molecular
Classify the following as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound: Salt Water
neither--it's a mixture
Name the following binary covalent compound using the accepted systematic nomenclature system: NI3
nitrogen triiodide
Monatomic anions are named by adding __X___ to the root of the name of the _____ that forms the anion.
nonmetal
Monatomic anions are named by adding _____ to the root of the name of the __X__ that forms the anion.
"ide"
Provide the formula for the following ionic compound: ammonium phosphate
(NH4)3PO4
Use the periodic table to predict the charge on the metal cation. Lithium, Li?
+1
Use the periodic table to predict the charge on the metal cation. Magnesium, Mg?
+2
The metals in Group 1A, 2A and some of 3A and 3B lose 1,2 and 3 electrons, respectively, to gain the electron configuration of the nearest noble gas. Use the periodic table to predict the charge on the metal cation. Aluminum, Al?
+3
Use the periodic table to predict the charge on the anion. Iodide, I?
-1
Typically, noble gases neither gain nor lose electrons. Nonmetals tend to gain 1,2 or 3 electrons to acquire the electron configuration of the nearest noble gas. Use the periodic table to predict the charge on the anion. Sulfide, S?
-2
Use the periodic table to predict the charge on the anion. Nitride, N?
-3
Provide the chemical formula for a compound with 6 carbon atoms, 7 hydrogen atoms and 1 oxygen atom.
C6H7O
Identify the following anion using the cation in the compound given: Hydrogen cyanide is HCN, so cyanide is ______.
CN-
Identify the following ion: dihydrogen phosphate
H2PO4-
Identify the following ion: hydrogen sulfide ion
HS-
Identify the following ion: hydrogen sulfate ion
HSO4-
Valence electrons are the ______ energy electrons in an atom, typically s and p electrons. These electrons are shared between atoms in ___X___ to form covalent bonds. Nonmetals share enough electrons to gain the eight valence electron, noble gas electron configuration, often called the ___X__.
Highest
Provide the formula for the following ionic compound: iron(II) sulfide
FeS
Identify the following binary covalent compound according to its common, memorized name: NH3
Ammonia
A chlorine atom has a much stronger attraction to its electron than a potassium atom does. When potassium and chlorine are combined, the potassium atom donates its 4s electron to the chlorine atom, forming potassium chloride, KCl. The potassium gains a ___X___ charge. The chlorine gains a ___X___ charge, and ______ bond is formed.
An ionic
A ___X___ is a ___X___ that contains two or more elements, with the ______ of those elements always combining in the same whole‑number ratio.
Atoms
Pairing Token: 5ee6-9339
BaSO4
Binary covalent compounds are typically composed of two nonmetals. The element farthest to the left or lower in the periodic table is usually written first, and is given the elemental name. The second element is given the -ide suffix. When naming, the number of each atom is indicated by mono-, di-, tri-, tetra-, penta-, hexa-, etc., except that mono- is not used when the first element has one atom. Name the following binary covalent compound using the accepted systematic nomenclature system: CO2
Carbon dioxide
Name the following binary covalent compound using the accepted systematic nomenclature system: CO
Carbon monoxide
Name the ions as you would if writing them in a name: Cl-
Chloride ion
A ______ is a __X___ that contains two or more elements, with the __X___ of those elements always combining in the same whole‑number ratio.
Compound
Classify the following as a pure substance or a mixture. Then, if it is a pure substance, classify it as an element or a compound: Sodium Chloride, NaCl
Compound
A polyatomic ion is a charged collection of atoms held together by ______.
Covalent
Identify the following anion using the cation in the compound given: Sodium dichromate is K2Cr2O7, so dichromate is ______.
Cr2O7^2-
Provide the formula for the following ionic compound: chromium(VI) oxide
CrO3
Identify the following anion using the cation in the compound given: Potassium chromate is K2CrO4, so chromate is ______.
CrO4^2-
Classify the following as a pure substance or a mixture. Then, if it is a pure substance, classify it as an element or a compound: Calcium, Ca
Element
Identify the following binary covalent compound according to its common, memorized name: CH3CH3
Ethane
Oxygen attracts its valence electrons more strongly than hydrogen does, giving a partial negative ( δ-) charge to the oxygen atom in water, and a partial positive charge ( δ+) to hydrogen.
False
Provide the formula for the following ionic compound: iron(III) oxide
Fe2O3
A chlorine atom has a much stronger attraction to its electron than a potassium atom does. When potassium and chlorine are combined, the potassium atom donates its 4s electron to the chlorine atom, forming potassium chloride, KCl. The potassium gains a ___X___ charge. The chlorine gains a ______ charge, and ___X___ bond is formed.
Negative
The naming of chemical compounds is known as chemical ________.
Nomenclature
Identify the following anion using the cation in the compound given: Sodium hypochlorite is NaOCl, so hypochlorite is ______.
OCl-
Valence electrons are the ___X___ energy electrons in an atom, typically s and p electrons. These electrons are shared between atoms in ___X___ to form covalent bonds. Nonmetals share enough electrons to gain the eight valence electron, noble gas electron configuration, often called the ______.
Octet
Name the ions as you would if writing them in a name: O2-
Oxide ion
Identify the following compound by name: diphosphorus pentoxide
P2O5
Identify the following compound by name: tetraphosphorus hexasulfide
P4S6
Identify the following compound by name: phosphorus tribromide
PBr3
Valence electrons are the ___X___ energy electrons in an atom, typically s and p electrons. These electrons are shared between atoms in _______ to form covalent bonds. Nonmetals share enough electrons to gain the eight valence electron, noble gas electron configuration, often called the ___X __.
Pairs
Ionic compounds (salts) have structures that maximize the electrostatic ___X____ between anions and cations, while minimizing the electrostatic ______ between anions and anions, and cations and cations.
Repulsions
Identify the following compounds by name: sulfur trioxide
SO3
When providing names for ionic compounds, use charges of known ions to determine the charges of unknown ions, recognizing that the overall charge on the compound is zero. Identify the following anion using the cation in the compound given: Potassium sulfite is K2SO3, so sulfite is ______.
SO3^2-
Remember, if a metal forms only one type of ion, do not use Roman numerals to indicate charge. Provide the name for the following ionic compound: AgNO3
Silver nitrate
In a hydrogen bromide molecule, HBr, the electron pair forming the bond is not shared evenly between the atoms. The bromine atom attracts more of the electron density to itself than the hydrogen atom does, giving the bromine atom a ________ charge. Thus, the hydrogen and bromine atoms share a pair of electrons in ___X__ bond.
partial negative
A chlorine atom has a much stronger attraction to its electron than a potassium atom does. When potassium and chlorine are combined, the potassium atom donates its 4s electron to the chlorine atom, forming potassium chloride, KCl. The potassium gains a ______ charge. The chlorine gains a __X___ charge, and ___X___ bond is formed.
postiive
Name the ions as you would if writing them in a name: K+
potassium ion
Provide the name for the following ionic compound: NaH
sodium hydride
Ionic compounds are typically ___X___ at room temperature, whereas molecular compounds are _______.
solids, liquids or gases
A ___X___ is a ______ that contains two or more elements, with the __X___ of those elements always combining in the same whole‑number ratio.
substance
Classify the following as a pure substance or a mixture. Then, if it is a pure substance, classify it as an element or a compound: Calcium, Ca
substance
Classify the following as a pure substance or a mixture. Then, if it is a pure substance, classify it as an element or a compound: Sodium Chloride, NaCl
substance