TEKS: Chapter 112. Science See All Teacher Resources

112.35.c.6

(6) Science concepts. The student knows and understands the historical development of atomic theory. The student is expected to:

• (A) describe the experimental design and conclusions used in the development of modern atomic theory, including Dalton's Postulates, Thomson's discovery of electron properties, Rutherford's nuclear atom, and Bohr's nuclear atom; 
• (B) describe the mathematical relationships between energy, frequency, and wavelength of light using the electromagnetic spectrum ; 
• (C) calculate average atomic mass of an element using isotopic composition ; and 
• (D) express the arrangement of electrons in atoms of representative elements using electron configurations and Lewis valence electron dot structures.