ATDH Chemistry UPDATED Exam
Questions and CORRECT Answers
Atom - CORRECT ANSWER - Smallest unit of an element
Molecule - CORRECT ANSWER - Atom bonded to at least one other atom
Ion - CORRECT ANSWER - Atom that has lost or gained an electron
Compound - CORRECT ANSWER - 2+ different elements
Diatomic elements - CORRECT ANSWER - H2, N2, O2, F2, Cl2, Br2, I2
Allotropes - CORRECT ANSWER - Elemental molecules with different formulas
Ionic compounds - CORRECT ANSWER - Metal and nonmetal (can be polyatomic too)
Molecular compounds - CORRECT ANSWER - Two or more nonmetals
Naming ionic compounds - CORRECT ANSWER - 1. name the metal
2. write the metal's oxidation state as a Roman numeral in parenthesis (skip for columns one and
two)
3. Name the nonmetal using an "ide" ending
MgF2 - CORRECT ANSWER - magnesium fluoride
FeCl3 - CORRECT ANSWER - Iron (III) chloride
,SnF2 - CORRECT ANSWER - Tin (II) fluoride
SnF4 - CORRECT ANSWER - Tin (IV) fluoride
Fe(NO3)2 - CORRECT ANSWER - Iron (II) Nitrate
NH4Cl - CORRECT ANSWER - Ammonium chloride
Al2O3 - CORRECT ANSWER - Aluminum oxide
FeCl2 - CORRECT ANSWER - Iron (II) chloride
Ammonium chloride - CORRECT ANSWER - NH4Cl
Iron (III) cyanide - CORRECT ANSWER - Fe(CN)3
Magnesium sulfate - CORRECT ANSWER - MgSO4
Ammonium sulfate - CORRECT ANSWER - (NH4)2SO4
FeCO3 - CORRECT ANSWER - Iron (II) carbonate
Fe(CN)3 - CORRECT ANSWER - iron (III) cyanide
Al(OH)3 - CORRECT ANSWER - Aluminum hydroxide
, CsNO3 - CORRECT ANSWER - Cesium nitrate
Zn3(PO4)2 - CORRECT ANSWER - Zinc phosphate
(NH4)2SO4 - CORRECT ANSWER - Ammonium sulfate
Naming molecular compounds - CORRECT ANSWER - 1. Give the appropriate numerical
prefix to the first element
2. Name the first element using its regular name on the periodic table
3. Give the appropriate numerical prefix to the second element
4. Name the nonmetal using an "ide" ending
Ex. dinitrogen monoxide, N2O
Naming binary acids - CORRECT ANSWER - 1. Hydro-
2. Insert name of element 2, replacing "-ine" with "-ic acid)
ex. hydrochloric acid, HCl
Naming oxyacids - CORRECT ANSWER - 1. HClO - hypochlorous acid
2. HClO2 - chlorous acid
3. HClO3 - chloric acid
4. HClO4 - perchloric acid
Tetraphosphorus hexasulfide - CORRECT ANSWER - P4S6
PCl3 - CORRECT ANSWER - Phosphorus trichloride
Dinitrogen tetroxide - CORRECT ANSWER - N2O4
Questions and CORRECT Answers
Atom - CORRECT ANSWER - Smallest unit of an element
Molecule - CORRECT ANSWER - Atom bonded to at least one other atom
Ion - CORRECT ANSWER - Atom that has lost or gained an electron
Compound - CORRECT ANSWER - 2+ different elements
Diatomic elements - CORRECT ANSWER - H2, N2, O2, F2, Cl2, Br2, I2
Allotropes - CORRECT ANSWER - Elemental molecules with different formulas
Ionic compounds - CORRECT ANSWER - Metal and nonmetal (can be polyatomic too)
Molecular compounds - CORRECT ANSWER - Two or more nonmetals
Naming ionic compounds - CORRECT ANSWER - 1. name the metal
2. write the metal's oxidation state as a Roman numeral in parenthesis (skip for columns one and
two)
3. Name the nonmetal using an "ide" ending
MgF2 - CORRECT ANSWER - magnesium fluoride
FeCl3 - CORRECT ANSWER - Iron (III) chloride
,SnF2 - CORRECT ANSWER - Tin (II) fluoride
SnF4 - CORRECT ANSWER - Tin (IV) fluoride
Fe(NO3)2 - CORRECT ANSWER - Iron (II) Nitrate
NH4Cl - CORRECT ANSWER - Ammonium chloride
Al2O3 - CORRECT ANSWER - Aluminum oxide
FeCl2 - CORRECT ANSWER - Iron (II) chloride
Ammonium chloride - CORRECT ANSWER - NH4Cl
Iron (III) cyanide - CORRECT ANSWER - Fe(CN)3
Magnesium sulfate - CORRECT ANSWER - MgSO4
Ammonium sulfate - CORRECT ANSWER - (NH4)2SO4
FeCO3 - CORRECT ANSWER - Iron (II) carbonate
Fe(CN)3 - CORRECT ANSWER - iron (III) cyanide
Al(OH)3 - CORRECT ANSWER - Aluminum hydroxide
, CsNO3 - CORRECT ANSWER - Cesium nitrate
Zn3(PO4)2 - CORRECT ANSWER - Zinc phosphate
(NH4)2SO4 - CORRECT ANSWER - Ammonium sulfate
Naming molecular compounds - CORRECT ANSWER - 1. Give the appropriate numerical
prefix to the first element
2. Name the first element using its regular name on the periodic table
3. Give the appropriate numerical prefix to the second element
4. Name the nonmetal using an "ide" ending
Ex. dinitrogen monoxide, N2O
Naming binary acids - CORRECT ANSWER - 1. Hydro-
2. Insert name of element 2, replacing "-ine" with "-ic acid)
ex. hydrochloric acid, HCl
Naming oxyacids - CORRECT ANSWER - 1. HClO - hypochlorous acid
2. HClO2 - chlorous acid
3. HClO3 - chloric acid
4. HClO4 - perchloric acid
Tetraphosphorus hexasulfide - CORRECT ANSWER - P4S6
PCl3 - CORRECT ANSWER - Phosphorus trichloride
Dinitrogen tetroxide - CORRECT ANSWER - N2O4
