GENERAL CHEMISTRY 1305

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ACS FINAL EXAM

An Ionic Compound ____________.

a) has a net positive charge.
b) has a net negative charge.
c) contains only cations.
d) contains only anions.
e) has a net charge of zero.

An Ionic Compound ____________.

e) has a net charge of zero.

The correct formula formed for a compound formed from the elements Al and O is__________.

e) Al2O3

The correct formula for the compound formed from the elements Mg and S is ___________.

a) MgS

Which one of the following compounds contains an ion with a 3+ charge?

a) KCl
b) Na2O
c) FeCl3
d) CuCl
e) MgCl2

c) FeCl3

What is the correct formula for the oxide ion?

a) O2-

The compound MgCl2 is named _____________.

a) magnesium chlorine
b) magnesium dichloride
c) magnesium (II) chloride
d) magnesium chloride
e) dimagnesium chloride

d) magnesium chloride

Which one of the following elements forms two or more ions with different ionic charges?

a) K
b) F
c) Ca
d) O
e) Fe

e) Fe

What is the correct formula for the iron (II) ion?

a) Fe +
b) Fe 2+
c) Fe 3+
d) Fe 2-
e) Fe 3-

b) Fe 2+

The name of the Cu + ion is__________.

b) copper (I).

What is the correct formula for iron (III) sulfide?

a) Fe2S2
b) Fe2S
c) FeS
d) FeS2
e) Fe2S3

e) Fe2S3

A(n) ___________ is the smallest neutral unit of two or more atoms held together by a covalent bond.

A MOLECULE is the smallest neutral unit of two or more atoms held together by a covalent bond.

In a molecule with covalent bonding __________.

a) oppositely charged ions are held together by strong electrical attractions.
b) atoms of metals form bonds to atoms of non-metals.
c) atoms of different metals form bonds.
d) atoms are held together by sharing electrons.
e) atoms of noble gases are held together by attractions between oppositely charged ions.

d) atoms are held together by sharing electrons.

Which of the following elements does NOT exist as a diatomic molecule?

a) hydrogen
b) nitrogen
c) chlorine
d) oxygen
e) carbon

(e) CARBON does NOT exist as a diatomic molecule.

In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons ____________.

a) in the atom
b) in its nucleus
c) in all the atoms
d) in its ion
e) needed to give it noble gas arrangement

e) needed to give it a noble gas arrangement.

Double and triple bonds form because __________.

single covalent bonds do not give all of the atoms in the molecule eight valence electrons.

The formula for the molecule formed from N and Cl would be _________.

NCl3

What is the correct electron dot structure for CS2?

...

What is the correct electron dot structure for C2F4?

...

According to the IUPAC nomenclature system, the types of compound that use prefixes in their names are

covalent compounds.

The correct name for the compound N2O3 is

dinitrogen trioxide

What is the formula of carbon tetraiodide?

CI4

The name of Al2(SO4)3 is ____________.

aluminum sulfate

The ability of an atom to attract the shared electrons in a covalent bond is its ____________.

electronegatvity

Which of the following substances contains a non-polar bond?

a) H2O
b) NaCl
c) NH3
d) MgF2
e) N2

e) N2

Which of the following elements has the lowest electronegativity?

a) Li
b) C
c) N
d) O
e) F

a) Li

Which of the following compounds contains a polar covalent bond?

a) NaF
b) HCl
c) Br2
d) MgO
e) O2

b) HCl

Which of the following compounds contains an ionic bond?

a) NH3
b) H2O
c) CaO
d) H2
e) CH4

c) CaO

If the electronegativity difference between elements X and Y is 2.1, the bond between the elements X-Y is ______.

Ionic

Ionic bonding is expected in which of these compounds?

a) Cl2
b) KF
c) OF2
d) HF
e) H2

b) KF

A polar bond is found in which of these compounds?

a) H2O
b) F2
c) NaCl
d) H2
e) N2

a) H2O

The bond in Cl2 is a(n)

a) non-polar covalent bond

A group of covalently bonded atoms that has an overall electrical charge is called a(n)

polyatomic ion

Which of the following polyatomic ions has a positive charge?

a) hydroxide
b) cyanide
c) hydrogen carbonate
d) ammonium
e) nitrate

d) ammonium

Which of the following polyatomic ions has a 3- ionic charge?

a) hydroxide
b) nitrate
c) sulfate
d) phosphate
e) bicarbonate

d) phosphate

What is the formula of the Nitride ion?

N 3-

The name of the HSO4 ion is?

Hydrogen Sulfate

What is the formula of the compound that contains Na+ and PO3 3- ions?

Na3PO4

Fe2(SO4)3 is called _______________.

iron (III) sulfate

What is the formula for aluminum nitrate?

Al(NO2)3

The VSEPR theory allows us to determine the most favorable

shape of a molecule

The shape of the ammonia molecule is

pyramidal

The water molecule has a dipole with the negative portion

pointing toward the oxygen atom

The carbon tetrachloride molecule, CCl4, has the shape of a

a) tetrahedron.
b) square
c) cube
d) circle
e) sphere

a) tetrahedron

Hydrogen sulfide, H2S, has a shape similar to _____.

water

POLAR or NON-POLAR?

carbon tetrachloride

NON-POLAR

POLAR or NON-POLAR?

water

POLAR

POLAR or NON-POLAR?

carbon dioxide

NON-POLAR

POLAR or NON-POLAR?

hydrogen sulfide

POLAR

POLAR or NON-POLAR?

hydrogen fluoride

POLAR

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