Patterns can be found everywhere in nature. From the snowflake to the Grand Canyon.[br]Patterns are also relevant for chemistry: The periodic repetition of properties of the elements leads to the development of the periodic table of the elements.[br][br]The similar reaction schemes of different substances lead to the development of the theory of acid and bases and redox reactions.[br][br]How beautiful chemical reactions can be and how fascinating patterns they develop can be found here:[br]But also, the chemical practice in the way how things are done is mostly repetitive and follows certain patterns. If you want to learn more about basic chemical practice, follow this link: