Chapter 3, Problem 33A

Interpretation Introduction

Interpretation:

The physical properties that distinguish between metals and non-metals need to be explained.

Concept introduction:

The periodic table is a proper arrangement of the elements according to their increasing atomic number. The elements follow the trends in their physical and chemical properties. The periodic table is divided into two forms one is a vertical column and the other one is horizontal. The elements are differentiated as metals, non-metals and metalloids.

Answer to Problem 33A

The physical properties on the basis of which metals and non-metals can be distinguished are density, ductile nature, conductor of heat and electricity.

Explanation of Solution

The difference based on physical properties −

Properties	Metals	Non-metals
Density	Metals are present with high density.	Non-metals are found with low density.
Ductile nature	Metals are soft, tensile, and ductile.	They are hard and brittle.
Conductor of electricity	Metals are used as good conductors of electricity.	They are poor conductors of electricity.
Conductor of heat	Metals are good conductors of heat.	Non-metals are poor conductors of heat.

Conclusion

Thus, the physical properties as density, tensile nature, and conductors for heat and electricity can help to differentiate between metals and non-metals.