
Concept explainers
Interpretation: The terms
Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 24A
The number of protons in an atom is termed as atomic number. Total number of protons and electrons are termed as mass number. By using the mass number and atomic number you can calculate the number of protons and neutrons.
Explanation of Solution
Protons are defined as a positively charged
Sum of number of protons and neutron in an atom is known as the mass number. Nucleon number is another number of mass number. The mass number is represented by the symbol A.
If you know the atomic number as well as mass number of an atom, the number of neutrons, electrons and protons can be determined.
Atomic number of an atom is the identity number of an element and the mass numbers are the number of electrons.
Chapter 3 Solutions
World of Chemistry
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