which books that can help me to have technic of mathematical modelling and which analysis methods that help us to bring a problem in physic or chemistry to a mathematical equation
A book about the nature of mathematical modeling and about the kinds of techniques that are useful for modeling systems is
“The Nature of Mathematical Modeling”, Neil Gershenfeld, Cambridge University Press (2011).
The text has three parts. The first covers exact and approximate analytical techniques; the second, numerical methods; and the third, model inference based on observations.
Each chapter presents a concise summary of the core results in an area, providing an orientation to what they can (and cannot) do, enough background to use them to solve typical problems, and pointers to access the literature for particular applications.