Texas Assessments Standards (STAAR)
TX.STAAR.C. STAAR Chemistry Assessment
Reporting Category 2: Atomic Structure and Nuclear Chemistry - The student will demonstrate an understanding of atomic theory and nuclear chemistry.
(C.6) Science concepts. The student knows and understands the historical development of atomic theory. The student is expected to:
C.6 (D) Use isotopic composition to calculate average atomic mass of an element. Supporting Standard (Chemistry STAAR EOC)