Chapter 4.2, Problem 7SSC

Interpretation Introduction

Interpretation:

The structure of a typical atom is to be described and the location of each subatomic particle is to be identified.

Concept introduction:

An element is a pure substance that cannot be broken down by chemicals. It made completely of one type of atom. Atom is the smallest particle in the element that can neither be created nor be destroyed.

Answer to Problem 7SSC

An atom consists of a dense nucleus that has neutron and proton placed in it and electrons surrounding it.

Explanation of Solution

The basic building of matter is atoms. There are 90 natural types of atoms and 25 lab-forming atoms.

The atom is made up of three basic particles namely neutrons, protons, and electrons.

Protons: carry a positive charge

Neutrons: carry no charge

Electrons: carry a negative charge

The nucleus is a central particle of atoms, which make up by joining protons and neutrons. And the nucleus is surrounded by a cloud of negatively charged electrons.

Conclusion

Atom is composed of a nucleus that has neutron and protons inside, and electron surrounds the nucleus.