TEKS 8.5B identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity

TEKS 8.7A model and illustrate how the tilted Earth rotates on its axis, causing day and night, and revolves around the Sun, causing changes in seasons

TEKS 8.7C students know the effects resulting from cyclical movements of the Sun, Earth, and Moon.

TEKS 8.5A 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;

8.5B identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity;

8.5C interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements

TEKS 6.11A describe the physical properties, locations, and movements of the Sun, planets, moons, meteors, asteroids, and comets