Alkanes and alkenes

This video tutorial covers the homologous series of alkanes and alkenes, focusing on their structures and bonding. It explains the saturated nature of alkanes with single covalent bonds and introduces methane and ethane as examples. The general formula CnH2n+2 for alkanes is discussed, along with how to derive molecular formulas. The video then shifts to alkenes, highlighting their unsaturated nature with double bonds, using ethene and propene as examples. The general formula CnH2n for alkenes is also explained, providing a comprehensive understanding of these hydrocarbon series.

What type of bonds do alkanes contain between carbon atoms?

• Triple covalent bonds

• Double covalent bonds

• Single covalent bonds

• Ionic bonds

What is the molecular formula for ethane using the general formula CnH2n+2?

• C2H8

• C2H10

• C2H6

• C2H4

What distinguishes alkenes from alkanes in terms of bonding?

• Presence of ionic bonds

• Presence of single bonds

• Presence of double bonds

• Presence of triple bonds

How many hydrogen atoms are bonded to each carbon atom in ethene?

• Four

• One

• Two

• Three

What is the general formula for alkenes?

• CnH2n

• CnH2n+2

• CnHn+2

• CnHn

Using the general formula for alkenes, what is the molecular formula for decene?

• C10H20

• C10H24

• C10H18

• C10H22

What is the relationship between the number of carbons and hydrogens in alkenes?

• Triple the number of carbons

• Half the number of carbons

• Equal to the number of carbons

• Double the number of carbons