Molecular Solids

Mr. Anderson explains molecular solids, which are solids made of interconnected molecules. Examples include ice, dry ice, and sugar. These solids have strong intramolecular forces but weak intermolecular forces, making them insulators with low melting points. Molecular solids can form polymers, which have commercial and biological applications. Ethylene can form polyethylene, a common plastic, while amino acids form proteins, essential for life. The video emphasizes understanding the properties of molecular solids and their significance in everyday life.

Which of the following is an example of a molecular solid?

• Iron

• Aluminum

• Ice

• Copper

What type of forces are strong within molecular solids?

• Intermolecular forces

• Intramolecular forces

• Magnetic forces

• Gravitational forces

Why do molecular solids generally have low melting points?

• They have strong intermolecular forces.

• They have weak gravitational forces.

• They have weak intermolecular forces.

• They have strong magnetic forces.

What is polyethylene made from?

• Ethylene

• Butane

• Methane

• Propane

How are proteins formed from amino acids?

• By forming a polymer called polystyrene

• By forming a polymer called polypeptide

• By forming a polymer called polyethylene

• By forming a polymer called polypropylene