1.
Chemical Tools: Experiments and Measurements

2.
Atoms, molecules, and ions

3.
Mass relationships in chemical reactions

4.
Reaction in aqueous solution

5.
Periodicity and the electronic structure of atoms

6.
Ionic Compounds: Periodic Trends and Bond Theory

7.
Covalent bonds and electron dot structures

8.
Covalent Bonds: Bond Theory and Molecular Structure

9.
Thermochemistry: chemical energy

10.
Gases: Properties and Behavior of Gases

11.
Liquids and phase changes

12.
Solids and solid-state substances

13.
Solutions and their properties

14.
chemical reaction kinetics

15.
chemical equilibrium

16.
Aqueous solution equilibrium: acid and base

17.
Applications of aqueous solution equilibrium

18.
Thermodynamics: Entropy, Free Energy, and Spontaneity

19.
electrochemistry

20.
nuclear chemistry

21.
Transition Elements and Coordination Chemistry

22.
main element

23.
Organic and Biological Chemistry

Appendix A Mathematical Operations A-1`
A.1 Scientific Notation A-1
A.2 Log A-4
A.3 Straight line graphs and linear equations A-6
A.4 Quadratic Equation A-7
A.5 Differentiation of the integral rate equation A-8
Appendix B Thermodynamic Properties at 25 °C A-10
Appendix C Equilibrium Constant A-15 at 25 °C
Appendix D Standard Reduction Potentials at 25 °C A-19
Appendix E: Properties of Water A-21
Choice Problem Answer A-23
Search I-1

The purpose of writing this book is to introduce chemistry in a clear and understandable way.
To this end, we will help readers who are studying chemistry for the first time to understand and empathize with chemistry.
If you immerse yourself in this book and continue to ask questions and check your understanding after each section, you will find it very helpful.
The way this book is designed and written will activate the reader's mind and help them digest important concepts as they learn the various principles of chemistry.
In the revised 8th edition, a learning cycle was established based on research on effective learning methods.

◎How to use this book◎

Step 1: Learning New Materials

- Explanation: When reading a text, you should always challenge yourself to understand the hidden 'why' behind the concept.
For example, if you learn that carbon forms four bonds, the explanation will provide the reason why.
- Pictures: Most pictures summarize and convey important points.
Verification draws attention to key principles and provides guidance on graph interpretation.
There is a way to answer the question.
First, review the picture.
Then, you can read the relevant description again.
The answer to the question is at the bottom of the question.
Concept exploration questions are provided in the margins to help readers digest and apply the most important concepts.
- Examples: The numerous examples in the text demonstrate how to solve specific types of problems.
Each example is solved in the following steps: problem identification->strategy->solution->check.
The practice problems are similar in form and complexity to the examples.
Practice problems will test your basic understanding.

If you have completed this problem correctly, try the application problem.
Application problems allow you to understand the topic more deeply by using the concept in a new situation.
Solutions to application problems are at the end of this book.
- Conceptual Problems: The intent of conceptual problems is to equip readers with the critical skills of visualizing the structure and interactions of atoms and molecules, while exploring an understanding of core principles, rather than the ability to accurately use numbers in equations.

Step 2: Problem-Solving Practice

- End-of-Chapter Problems: By practicing with the many and varied problems at the end of each chapter, you will master specific concepts.
The answers to the problems are in the 'Solutions' section at the back of the book, with one problem missing.

Step 3: Mastery

- Inquiry: The Inquiry section connects chemistry with the world around us.
The way to connect is to click on a link that will be useful to many students' future careers.
Representative topics include materials, medicines, and the environment.
The goal of this section is to increase comprehension and aid memory by linking concepts to memorable uses.
The Inquiry section can be thought of as the cornerstone of each chapter.
Because the inquiry problems review several key concepts and calculations.
These sections will help you prepare for the qualification exam.
Because these sections are written in the same style as the new version of the qualification exam.
That is, a phrase describing the application is followed by a series of questions.
These questions will test your ability to apply basic scientific concepts to the situation.
- End-of-Chapter Summary and Review Questions: End-of-chapter summary and review questions are useful tools for exam preparation.
Each review question is linked to the learning objectives of the summary.