GCSE Chemistry - What is a Hydrocarbon? What are Alkanes? Hydrocarbons and Alkanes Explained #51

The video tutorial introduces organic chemistry, focusing on hydrocarbons and alkanes. It explains the significance of carbon in forming large compounds and defines hydrocarbons as compounds made solely of carbon and hydrogen. The tutorial covers the first four alkanes: methane, ethane, propane, and butane, and introduces the concept of homologous series with a general formula for alkanes. It demonstrates how to calculate molecular formulas for alkanes using octane as an example. The video concludes by discussing saturated compounds and briefly introduces alkenes.

What is the primary characteristic of hydrocarbons?

• They contain carbon and sulfur.

• They contain carbon and oxygen.

• They are made up of carbon and hydrogen only.

• They are compounds with nitrogen.

Which of the following is the simplest alkane?

• Butane

• Propane

• Methane

• Ethane

What is the general formula for alkanes?

• CNH2N

• CNH2N+2

• CNH2N-2

• CNH2N+1

How many hydrogen atoms are in an alkane with 8 carbon atoms?

• 22

• 20

• 18

• 16

What distinguishes alkanes from alkenes?

• Alkenes have single bonds.

• Alkanes have only single bonds.

• Alkenes have no bonds.

• Alkanes have double bonds.