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Study Quiz Section 2.1
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The following questions cover material in section 2.1 of the text



1

What is true about the composition of one formula unit of an ionic compound, such as zinc oxide?
A)The total positive charge on the cations equals the total negative charge on the anions.
B)There is more positive charge.
C)There is more negative charge.
D)The charge depends upon the compound.
2

What is unusual about pure substances whose formulas begin with hydrogen, such as HBr (hydrogen bromide)?
A)They are ionic, but their names contain prefixes.
B)They are molecular, but their names do not contain prefixes.
C)They are neither ionic nor molecular.
D)They are named with a unique set of rules.
3

Which statement about polyatomic ions is FALSE?
A)They contain atoms of more than one element.
B)They are held together by covalent bonds.
C)They have an overall + or - electrical charge.
D)They form molecular compounds.
4

A binary ionic compound is formed from elements A and B. The formula is A2B. What inference can you make about this substance from the formula?
A)A is a metal and B is a non-metal.
B)B is a metal and A is a non-metal.
C)The name will contain the prefixes di and mono.
D)The compound contains a polyatomic ion.
5

Which statement about binary compounds is FALSE?
A)Binary compounds are formed from only two elements.
B)The name of a binary compound ends in -ide.
C)Binary compounds contain atoms of a metal and atoms of a non-metal.
D)Binary compounds may be ionic or molecular.
6

A binary molecular compound is formed from two elements, X and Y. The formula is Y5Y8. What is true about the systematic (IUPAC) name of this compound?
A)has the form pentaX octoY
B)ends in -ate
C)has the form octoY pentaX
D)does not contain any prefixes
7

Which of these features of a substance CANNOT be inferred from its systematic (IUPAC) name?
A)composition - what it is made of
B)properties - its physical and chemical features
C)identity - what substance it is
D)source - where the chemical is obtained







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