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