Middle School Science Lessons

Objectives: Students will be able to determine the number of shells and valance electrons for elements 1-20

Materials:

• Google Slides – students will learn how to find the number of energy levels (shells) for elements in periods 1 – 8 and the number of valence electrons in their outer shells using the periodic table. Updated (Public link)
• Handout – Shells & Valence Electrons
  • Older version: How to determine the number of valence electrons and shells using the element’s group number and period – Notes (pdf)
• “Find that Element!” Worksheet (pdf)- Practice finding the period & group for each element