TEKS: Chapter 112. Science See All Teacher Resources

112.18.b.5

(5) Matter and energy. The student knows the differences between elements and compounds. The student is expected to:

• (A) know that an element is a pure substance represented by a chemical symbol and that a compound is a pure substance represented by a chemical formula; 
• (B) recognize that a limited number of the many known elements comprise the largest portion of solid Earth, living matter, oceans, and the atmosphere; and
• (C) identify the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change.