Name _____________
Isomers
Date: _________
1. Which compound has an isomer?
1)
2)
3)
4)
2. The two isomers of butane have different
1) formula masses
3) molecular formulas
2) empirical formulas
4) structural formulas
3. Given the formulas for two compounds:
These compounds differ in
1) gram-formula mass
3) percent composition by mass
2) molecular formula
4) physical properties at STP
4. Given a formula representing a compound:
Which formula represents an isomer of this compound?
1)
2)
3)
4)
Isomers
5. Which two compounds are isomers of each other?
1) CH 3CH 2COOH and CH3COOCH 2CH 3
3) CH 3CHBrCH 3 and CH 2BrCHBrCH 3
2) CH 3CH 2CHO and CH 3COCH 3
4) CH 3CHOHCH 3 and CH 3CHOHCH 2OH
6. Given the structural formulas:
Which two formulas represent compounds that are isomers of each other?
1) A and B
2) A and C
3) B and D
4) C and D
7. Which pair of compounds are isomers?
1) NO 2 and N2O4
3) HCOOH and CH 3COOH
2) P2O5 and P 4O10
4) CH 3OCH 3 and C 2H 5OH
8. Which structural formula represents a molecule that is not an isomer of pentane?
1)
2)
3)
4)
9. Which compound is an isomer of pentane?
1) butane
2) propane
3) methyl butane
4) methyl propane
Answer Key
Isomers
1.
4
2.
4
3.
4
4.
2
5.
2
6.
1
7.
4
8.
4
9.
3