Which of the following is the correct definition for a hydrocarbon?

• A molecule containing hydrogen and carbon

• An ion containing hydrogen and carbon

• An ion containing only hydrogen and carbon

• A molecule containing only hydrogen and carbon

What is the general formula for the alkanes?

• C_nH_2n

• C_nH_2n+2

• C_2nH_n

• C_2n+2H_n

Which of the following are characteristics of a homologous series?

• trend in chemical properties, similar physical properties, same general formula

• same functional group, trend in chemical properties, similar physical properties

• trend in physical properties, similar chemical properties, same general formula

• similar chemical properties, same physical properties, same general formula

Complete the sentence: hydrocarbons are molecules made of hydrogen and carbon ____.

What is the name of this alkane?

• ethane

• propane

• butane

• pentane

What is the name of this alkane?

• ethane

• propane

• butane

• pentane

What is the name of this alkane?

CH₃CH₂CH₂CH₂CH₃

• ethane

• propane

• butane

• pentane

What is the name of this alkane?

CH₃CH₃

• ethane

• propane

• butane

• pentane

Which of the following structures represents ethane?

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• 
• 
• 

Which of the following structures represents methane?

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• 
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•