What is the connection between coffee and chemistry? This is an important question, but before answering it, we need to understand what chemistry is. Chemistry is "the study of matter and its properties, how and why substances combine or separate to form other substances, and how substances interact with energy." Now we can use our knowledge of chemistry to create a high-quality cup of coffee. To put it simply, there are several factors that affect the final taste of a cup of coffee, which we will discuss in this article. These factors are: