Chemistry: Exploring the Elements and Compounds

What is the basis of the periodic table?

A. molecular size

B. molecular mass

C. atomic mass

D. atomic number

How can one atom of silicon be properly combined in a compound?

A. two atoms of oxygen

B. one atom of chlorine

C. three atoms of hydrogen

D. four atoms of calcium

Answers:

1. The periodic table is based on an element's atomic number.

2. One atom of silicon can properly combine in a compound with two atoms of oxygen.

The periodic table serves as a valuable tool in understanding the properties and relationships of elements. It is structured based on the atomic number of elements, which represents the number of protons in the nucleus of an atom. This unique identifier helps determine an element's position in the periodic table, with elements arranged in periods and groups according to their atomic numbers.

When it comes to silicon, a versatile element, it can form compounds with various other elements. One such compound is silicon dioxide (SiO₂), where one atom of silicon combines with two atoms of oxygen. Silicon dioxide, also known as silica, is widely used in numerous industries due to its unique properties.

This compound plays a crucial role in industries such as construction, electronics, and glass manufacturing, thanks to its high melting point, hardness, and electrical insulating capabilities. Understanding the proper combination of atoms in compounds like silicon dioxide helps advance technological innovations and enhance various products and materials.