Chemistry or chemical processes is used by everyone everyday in one way or the other. When preparing your morning tea or coffee you are extracting taste substances from tea leaves or coffee beans. When taking a shower you are using surface active molecules in the soap or shampoo to become clean. When walking or cycling to school you need to convert your breakfast into energy for your muscles to work efficiently. And so it continues for the duration of the day. Not even when you are asleep it is possible to avoid chemical reactions since your dreams are created by molecules known as signal substances so that your brain is activated.