Chapter SM, Problem 4PQ

Interpretation Introduction

Interpretation:

The classification of carbon dioxide in form of dry ice has to be determined.

Concept Introduction:

Crystalline solids can be classified as follows:

1. Ionic solids: As is evident from its name, ionic compounds are made up of ions. These ions have opposite charges on them. The one with positive charge is called cation while the other with negative charge is known as an anion.

2. Metallic solids: Such solids have metallic bonds in between them. These bonds result from interaction between positively charged atoms and free electrons of same metal. These are formed between metal atoms.

3. Covalent solids: Such solids are also known as network solids. These solids have covalent bonds between them. Since covalent bonds are present in ionic solids, these share electrons between bonded atoms.

4. Molecular solids: Van der Waals forces exist between molecular solids. These forces are quite weak as compared to other forces. These have low melting points and these are very soft in nature.