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Chemistry 1210 Exam One

Chemistry20 CardsCreated 5 months ago

This deck covers key concepts and questions from a Chemistry 1210 exam, including chemical equations, mass comparisons, ionic compounds, and empirical formulas.

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Of the following, only ___ is a chemical equation. a) melting of lead b) dissolving sugar in water c) tarnishing of silver d) crushing of stone e) dropping a penny into a glass of water

c) tarnishing of silver
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Key Terms

Term
Definition
Of the following, only ___ is a chemical equation. a) melting of lead b) dissolving sugar in water c) tarnishing of silver d) crushing of stone e) dropping a penny into a glass of water
c) tarnishing of silver
Of the following, ___ is the largest mass. a) 25 kg b) 2.5x10^2 mg c) 2.5x10^15 pg d) 2.5x10^9 fg e) 2.5x10 ng
a) 25 kg
Write the chemical formula for an ionic compound formed from the following ions: K+ and N3
K3N
Write the chemical formula for an ionic compound formed from the following ions: Ca+2 and F
CaF2
Write the chemical formula for an ionic compound formed from the following ions: Fe+3 and S2
Fe2S3
Which formula/name pair is incorrect? a) FeSO4 iron (II) sulfate b) Fe2(SO3)3 iron (III) sulfite c) FeS iron (II) sulfide d) FeSO3 iron (II) sulfite e) Fe2(SO4)3 iron (III) sulfide
e) Fe2(SO4)3 iron (III) sulfide — should be sulfate
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Chemistry 1210 Exam One
TermDefinition
Of the following, only ___ is a chemical equation. a) melting of lead b) dissolving sugar in water c) tarnishing of silver d) crushing of stone e) dropping a penny into a glass of water
c) tarnishing of silver
Of the following, ___ is the largest mass. a) 25 kg b) 2.5x10^2 mg c) 2.5x10^15 pg d) 2.5x10^9 fg e) 2.5x10 ng
a) 25 kg
Write the chemical formula for an ionic compound formed from the following ions: K+ and N3
K3N
Write the chemical formula for an ionic compound formed from the following ions: Ca+2 and F
CaF2
Write the chemical formula for an ionic compound formed from the following ions: Fe+3 and S2
Fe2S3
Which formula/name pair is incorrect? a) FeSO4 iron (II) sulfate b) Fe2(SO3)3 iron (III) sulfite c) FeS iron (II) sulfide d) FeSO3 iron (II) sulfite e) Fe2(SO4)3 iron (III) sulfide
e) Fe2(SO4)3 iron (III) sulfide — should be sulfate
The name of PCl3 is a) potassium chloride b) phosphorus trichloride c) phosphorus (III) chloride d) monophosphorus trichloride e) trichloro potassium
b) phosphorus trichloride
In the Rutherford nuclear atom model,
a) the heavy subatomic particles, protons and neutrons, reside in the nucleus
Which compounds do not have the same empirical formula? a) C2H2, C6H6 b) CO, CO2 c) C2H4, C3H6 d) C2H4O2, C6H12O6 e) C2H5COOCH3, CH3CHO
b) CO, CO2
There are ___ electrons, ___ protons, and ___ neutrons in an atom of 132Xe.
54 electrons, 54 protons, and 78 neutrons
Isotopes are atoms that have the same number of ___ but differing number of ___.
protons, neutrons
Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties? a) H, Li b) Cs, Ba c) Ca, Sr d) Ga, Ge e) C, O
c) Ca, Sr
Name of Group 1A:
Alkali
Name of Group 2A:
Alkaline earth
Name of Group 7A:
Halogens
Name of Group 8A:
Noble gases
Which one of the following molecular formulas is also an empirical formula? a) C6H6O2 b) C2H6SO c) H2O2 d) H2P4O6 e) C6H6
b) C2H6SO
Which species has 18 electrons? a) 39K b) 32S2 c) 35Cl d) 27Al+3 e) 64Cu+2
b) 32S2
Which formula/name pair is incorrect? a) Mn(NO2)4 manganese (II) nitrite b) Mg(NO3)2 magnesium nitrate c) Mn(NO3)2 manganese (II) nitrate d) Mg3N2 magnesium nitrite e) Mg(MnO4)2 magnesium permanganate
d) Mg3N2 magnesium nitrite — should be nitride
Barium reacts with a polyatomic ion to form a compound with the general formula Ba3(X)2. What would be the most likely formula for the compound formed between sodium and the polyatomic ion X? a) NaX b) Na2X c) Na2X2 d) Na3X e) Na3X2
d) Na3X