You need no formulas for this question
Work Step by Step
This question deals with classifying substances as pure substances, a heterogeneous mixture, or a homogeneous mixture. The specific substance is sand. Sand is a heterogeneous mixture. It is composed of many different materials, including silicon, quartz, and many others. These materials aren't bonded to each other, making it a mixture. The fact that you can see different individual particles makes it a heterogeneous mixture.