Chapter 21, Problem 21.78QP

Interpretation Introduction

Interpretation:

Why after heating, a metal surface develops a color pattern like an oil slick on water has to be explained.

Concept introduction:

Metals:

• Many metals that are naturally occurs in nature with huge amount.
• Very few metals cannot undergo natural process like oxidation.
• A metal is a material in the form of an element, compound, or in the form of alloy and which is basically hard when it is in solid state.
• Metals are look like shiny and malleable.
• Metals are good conductors and shows electrical conductivity and thermal conductivity.
• Smelting is the process to separate metals from their ores, this process requires high temperatures