Texas TEKS Standards
TX.112.20. Science, Grade 8.
(8.3) Scientific investigation and reasoning. The student uses critical thinking, scientific reasoning, and problem solving to make informed decisions and knows the contributions of relevant scientists. The student is expected to:
8.3 (B) Use models to represent aspects of the natural world such as an atom, a molecule, space, or a geologic feature.
(8.5) Matter and energy. The student knows that matter is composed of atoms and has chemical and physical properties. The student is expected to:
8.5 (A) Describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons in the nucleus and electrons in the electron cloud.