As the science worksheet illustrates, the task here is to match each diagram with its correct description based on its quality as elements. If they are pure substances, then your student will have to write it down at the bottom table; else, they must mention that the compound is a mixture of two or more elements. Such a chemistry worksheet where we mention compounds and mixtures is very important at the early stages of education as it will help the students understand what elements are, how they are classified, and how to differentiate them from other elements.