Covalent bonding in methane, ammonia & water

This video tutorial covers covalent bonding in small molecules like methane, ammonia, water, hydrogen fluoride, and ethanol. It explains how these molecules share electrons due to their valence shell configurations and discusses their molecular structures and shapes. The video also introduces dot and cross diagrams to represent covalent bonds and explores the impact of lone pairs on molecular geometry and intermolecular forces. Finally, it examines the structure of ethanol and reviews key bonding concepts.

Which of the following is a use of hydrogen fluoride?

• Fuel for vehicles

• Household cleaner

• Etching glass

• Drinking water

What is the shape of a methane molecule?

• Bent

• Trigonal planar

• Linear

• Tetrahedral

How many covalent bonds does nitrogen typically form?

• Four

• One

• Two

• Three

What is the main reason water is liquid at room temperature?

• Presence of lone pairs

• Strong covalent bonds

• Strong intermolecular forces

• Weak intermolecular forces

In ethanol, how many bonds does oxygen typically form?

• Four

• Three

• Two

• One