Analytical Chemistry is important and applied, experimental field of science that employs different instruments, and methods for the collection, separation, identification, and quantification of various molecules. The book is organized into six sections, and covers the basic concepts of qualitative and quantitative analysis, spectrochemical methods of analysis, along with thermal- and electroanalytical methods. Qualitative analysis identifies analytes, while quantitative analysis determines the concentration or numerical amount of the molecules under study. This book also exposes students to the different laws of spectroscopy, and various transitions that occur in the different regions of the electromagnetic spectra. The main objective of this work is to develop an understanding and make learners familiar with the basic analytical methods employed in the chemical analysis of various compounds. Includes new material in: Amino Acids, Peptides, and Proteins, Enzymes, Nucleic Acids.