This book describes fundamental chemical principles and chemical properties. Chemists learn about these properties and principles by designing and performing experiments that reveal how substances behave. Chemists also construct theories to explain the results of their experiments. Some of these theories are presented in this book. Every theory is based on experimental observations, and the goal of a theory is to explain some set of experimental results. A useful theory also makes predictions about new phenomena that might be ob- served, and the test of any theory is whether its predictions match reality. Chemists continually test and refine chemical theories by designing and conducting new ex- periments - Ushbu kitobda asosiy kimyoviy tamoyillar va kimyoviy xususiyatlar tasvirlangan. Kimyogarlar ushbu xususiyatlar va tamoyillar haqida moddalarning qanday harakat qilishini ochib beradigan tajribalarni loyihalash va amalga oshirish orqali bilib olishadi. Kimyogarlar o'zlarining tajribalari natijalarini tushuntirish uchun nazariyalarni ham tuzadilar. Ushbu nazariyalarning ba'zilari ushbu kitobda keltirilgan. Har bir nazariya eksperimental kuzatishlarga asoslanadi va nazariyaning maqsadi eksperimental natijalar to'plamini tushuntirishdir. Foydali nazariya, shuningdek, kuzatilishi mumkin bo'lgan yangi hodisalar haqida bashorat qiladi va har qanday nazariyaning sinovi uning bashoratlarining haqiqatga mos kelishidir. Kimyogarlar doimiy ravishda yangi eksperimentlarni loyihalash va o'tkazish orqali kimyoviy nazariyalarni sinovdan o'tkazadilar va takomillashtiradilar.