Chemistry 1210 Exam One – Flashcards

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

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

Write the chemical formula for an ionic compound formed from the following ions: a) K+ and N-3 b) Ca+2 and F- c) Fe+3 and S-2

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

The name of PCl3 is a) potassium chloride b) phosphorus trichloride c) phosphorus (III) chloride d) monophosphorus trichloride e) trichloro potassium

In the Rutherford nuclear-atom model, a) the heavy subatomic particles, protons and neutrons, reside in the nucleus b) the three principal subatomic particles (protons, neutrons and electrons) all have essentially the same mass c) the light subatomic particles, protons and neutrons, reside in the nucleus d) mass is spread essentially uniformly throughout the atom e) the 3 principal subatomic particles (protons, neutrons, and elections) all have essentially the same mass and mass is spread essentially uniformly throughout the atom

Which compounds do not have the same empirical formula? a) C2H2, C6H6 b) CO, CO2 c) C2H4, C3H6 d) C2H4O2, C6H12O6 e) C2H5COOCH3, CH3CHO

There are ____ electrons, ____ protons, and ____ neutrons in an atom of 132 Xe. 54

Isotopes are atoms that have the same number of _____ but differing number of _____.

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

name of Gr 1A:

name of Gr 2A:

name of Gr 7A:

name of Gr 8A:

Which one of the following molecular formulas is also an empirical formula? a) C6H6O2 b) C2H6SO c) H2O2 d) H2P4O6 e) C6H6

Which species has 18 electrons? a) 39K b) 32S-2 c) 35Cl d) 27Al+3 e) 64Cu+2

Which formula/name pair is incorrect? a) Mn(NO2)4 manganese (II) nitrite b) Mg(NOs)2 magnesium nitrate c) Mn(NO3)2 manganese (II) nitrate d) Mg3N2 magnesium nitrite e) Mg(MnO4)2 magnesium permanganate

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

The name of the binary compound N2O4 is ____. a) nitrogen oxide b) nitrous oxide c) nitrogen (IV) oxide d) dinitrogen tetroxide e) oxygen nitride

One mole of ____ contains the smallest number of atoms. a) S8 b) C10H8 c) Al2(SO4)3 d) Na3PO4 e) NaCl