These compounds can be classified as primary, secondary or tertiary. Can you identify which category each compound belongs to?
Identify whether the following structures are primary, secondary or tertiary.
| Primary | Secondary | Tertiary | ||
| 1-iodopropane |  |
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| methylcyclohexanol |  |
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| 2-bromo-2-methylpropane | 
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| 3-chloropentane | 
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| cyclohexanol | 
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| ethanol | 
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| 2-chloropentane | 
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There is no right or wrong answer here, but some of the learning goals are more fundamental to the overall understanding of isomerism, which is why we’ve suggested the options shown.