Which hydrocarbons are straight-chain and contain only single bonds between carbon atoms?

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Prepare for the Dual Enrollment Physical Science Midterm. Study with flashcards and multiple choice questions, each with hints and explanations. Ace your exam!

Multiple Choice

Which hydrocarbons are straight-chain and contain only single bonds between carbon atoms?

Explanation:
Alkanes are hydrocarbons in which all carbon–carbon bonds are single. This makes them saturated, since each carbon forms four single bonds. When the carbon chain is unbranched, it’s a straight-chain alkane. They contain no double or triple bonds, which would make them alkenes or alkynes. Cycloalkanes also use single bonds but are arranged in rings, not as a straight chain, so they don’t fit the requirement. So, the hydrocarbon family that is straight-chain and has only single bonds is alkanes. For example, hexane is a straight-chain alkane with the formula CH3–CH2–CH2–CH2–CH2–CH3.

Alkanes are hydrocarbons in which all carbon–carbon bonds are single. This makes them saturated, since each carbon forms four single bonds. When the carbon chain is unbranched, it’s a straight-chain alkane. They contain no double or triple bonds, which would make them alkenes or alkynes. Cycloalkanes also use single bonds but are arranged in rings, not as a straight chain, so they don’t fit the requirement. So, the hydrocarbon family that is straight-chain and has only single bonds is alkanes. For example, hexane is a straight-chain alkane with the formula CH3–CH2–CH2–CH2–CH2–CH3.

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