Chapter 25, Problem 20TE

Th factors that influence bond strength influence mineral hardness. What are these factors?

To determine

The factors that influence bond strength and influence mineral hardness.

Answer to Problem 20TE

The factors that influence bond strength and influence mineral hardness are ionic charge, atom or ion size and packing.

Explanation of Solution

Hardness does not signify the breaking of minerals but it defines the resistance to breakage or scratching. It depends on various factors such as:-

1. Ionic charge: Higher the charge between ions higher will be attraction and thus stronger will be the bond between the minerals.
2. Atom or ion size: Small size atoms or ions can be packed closer to each other comparatively.
3. Packing: Closely packed ions will have less center distance. The bond will be stronger as there will be a higher force of attraction.

Conclusion:

Therefore, the factors that influence bond strength and influence mineral hardness are ionic charge, atom or ion size and packing.