🧪 Part 1: Element Identification

a) Oxygen: _______ b) Carbon: _______ c) Sodium: _______ d) Iron: _______

a) Atomic number 6: _____________ b) Atomic number 11: _____________

c) Atomic number 17: _____________ d) Atomic number 2: _____________

Period 2: Li, _______, B, _______, N, O, F, _______

Period 3: Na, Mg, _______, Si, P, _______, Cl, Ar

⚗️ Part 2: Element Groups and Properties

a) As you go down a group, the atomic size generally _____________.

b) Elements in the same group have similar _____________.

🔬 Part 3: Element Groups