Chemistry Paper 1 Flashcard

Front

What is the chemical formula for the complete combustion of octane (C₈H₁₈)?

Back

C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O

Front

Which fraction of crude oil is primarily used in diesel engines?

Back

Diesel

Front

What is the molecular formula of butane?

Back

C₄H₁₀

Front

Why are alkenes more reactive than alkanes?

Back

They have a double bond.

Front

What are the products of the complete combustion of hydrocarbons?

Back

Water and carbon dioxide.

Front

Define hydrocarbons.

Back

Compounds consisting entirely of hydrogen and carbon.

Front

What is the difference between alkanes and alkenes?

Back

Alkanes have single bonds; alkenes have at least one double bond.

Front

What is the general formula for alkanes?

Back

CₙH₂ₙ₊₂

Front

What is the process of cracking in petroleum refining?

Back

Breaking down larger hydrocarbon molecules into smaller ones.

Front

What is the significance of the octane rating in fuels?

Back

It measures a fuel's ability to resist knocking during combustion.