Chapter 02 – Atoms, Molecules, and Ions
105. There are the seven elements that naturally occur as diatomic molecules. This list
contains four of those plus one that does not fit this distinction. Which one of the following
does not occur naturally as a diatomic molecule?
106. Select True or False: An ion is an atom or group of atoms that has a net positive or
negative charge.
Chapter 02 – Atoms, Molecules, and Ions
107. A molecule of antifreeze, ethylene glycol, has the formula C2H4(OH) 2. How many
atoms are there in one molecule of antifreeze?
108. How many carbon atoms are in one molecule of CH3(CH2)3CH3?
Chapter 02 – Atoms, Molecules, and Ions
109.
How many hydrogen atoms are in one molecule of CH3(CH2)3CH3?
110. The formula for isopropyl alcohol is sometimes written as (CH3)2CHOH to better
indicate how the atoms are connected. How many hydrogen atoms would be contained in 3
dozen isopropyl alcohol molecules?
Chapter 02 – Atoms, Molecules, and Ions
111. Select True or False: An allotrope is one of the two or more distinct forms of an
element.
112. Select True or False: An empirical formula tell us which ions are present in a compound
113. Give the formula for potassium oxide.
Chapter 02 – Atoms, Molecules, and Ions
114. Give the formula for magnesium chloride.
115. Give the formula for carbon disulfide.
116. Give the formula for potassium hydroxide.
Chapter 02 – Atoms, Molecules, and Ions
117. Give the formula for nickel(II) sulfite.
118. Name the following binary compound: FeS.
119. Name the following binary compound: NaH.
Chapter 02 – Atoms, Molecules, and Ions
120. Name the following binary compound: MnCl2.
121. The following binary compound, Fe2O3, can be named Iron (III) oxide. What is another
acceptable name for the compound?
Chapter 02 – Atoms, Molecules, and Ions
122. The following compound, CuCO3, can be named copper (II) carbonate. What is another
acceptable name for the compound?
123. Name the following compound: K3PO4.
124. Name the following compound: Al(NO2)2.
Chapter 02 – Atoms, Molecules, and Ions
125. Name the following compound: Cl2O7.
126. Give the formula of magnesium nitrate.
127. Give the formula of calcium phosphate.
Chapter 02 – Atoms, Molecules, and Ions
128. Give the formula of iron(II) phosphate.
129. Give the formula of copper(II) bromide.
130. Give the formula of ammonium sulfate.
Chapter 02 – Atoms, Molecules, and Ions
131. Select True or False: The formula of hydrochloric acid is HCl.
132. Select True or False: The formula of carbonic acid is HCO3.
133. Select True or False: The formula of nitrous acid is HNO3.
134. Select True or False: The formula of sulfuric acid is H2SO4.