Chain Length

Question 1

What is the definition of short-chain molecules, and what are their properties?

Answer 1

Short-chain molecules have 1–4 carbon atoms. They are gases or volatile liquids, highly flammable, and used as fuels.

Examples: methane, ethane, butane.

Question 2

What is the definition of medium-chain molecules, and what are their properties?

Answer 2

Medium-chain molecules have 5–12 carbon atoms. They are liquids, less volatile, used in fuels, solvents, and fragrances.

Examples: pentane, octane, dodecane.

Question 3

What is the definition of long-chain molecules, and what are their properties?

Answer 3

Long-chain molecules have 13–20 carbon atoms. They are waxy solids or viscous liquids, less volatile, and used in lubricants and waxes.

Examples: hexadecane, eicosane.

Question 4

What is the definition of very long-chain molecules, and what are their properties?

Answer 4

Very long-chain molecules have 21+ carbon atoms. They are solid at room temperature, found in plastics, polymers, and waxes.

Examples: polyethylene, paraffins.

Question 5

How are biochemical chains like fatty acids classified by length?

Answer 5

Short-chain fatty acids: 2–6 carbons. Medium-chain fatty acids: 6–12 carbons. Long-chain fatty acids: 13–21 carbons. Very long-chain fatty acids: 22+ carbons.