توضیحات:

Chemistry learning is a branch of natural science that deals principally with the properties of substances, the changes they undergo, and the natural laws that describe these changes.
What is chemistry? Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy. Many people think of chemists as being white-coated scientists mixing strange liquids in a laboratory, but the truth is we are all chemists.