Learning a science, like chemistry, is not just learning concepts like the chemical reactions. You will be learning content through lenses which we call crosscutting concepts. These concepts are ideas that you started to learn many years ago when you started to look at the world. The more knowledge you gain, the more you will build upon concepts that you have already learned. You will develop a stronger understanding of this concept the more you learn the little details. These seven (7) crosscutting concepts will be referred to within every concept learned. Keep track of their interactions to what you have learned before chemistry and make the connections to what you are learning.