The document provides instructions for a science class activity on elements, compounds, and mixtures. Students are asked to gather specific materials and complete tasks including: 1) Creating visual representations using small bags to model the particles of two different elements, two compounds, and various mixtures. 2) Filling out part of a Venn diagram comparing elements, compounds, and mixtures and completing the rest for homework. 3) Correcting a test and obtaining a signature by the next class.

4. Bohr Model for Helium Row: # of Protons: # of Neutrons: # of Electrons: 1 2 4-2=2 2 P=2 N=2 2 Element Information Bohr Model Helium

5. Bohr Model for Helium F= 18 V = 2 He Element Family # + Valence Electron Dot Diagram (LEWIS DOT) Helium

6. Bohr Model for Carbon Row: # of Protons: # of Neutrons: # of Electrons: 2 6 12-6=6 6 P=6 N=6 2 4 C Valence Element Information Bohr Model Lewis Dot Carbon

7. Bohr Model for Beryllium Row: # of Protons: # of Neutrons: # of Electrons: 2 4 9-4=5 4 P=4 N=5 2 2 What is the VALENCE? Element Information Bohr Model Beryllium

8. Bohr Model for Beryllium F= 2 V = 2 Be Element Family # + Valence Electron Dot Diagram (LEWIS DOT) Beryllium

9. Bohr Model for Oxygen Row: # of Protons: # of Neutrons: # of Electrons: 2 8 16-8=8 8 P=8 N=8 2 6 What is the VALENCE? Element Information Bohr Model Oxygen

10. Bohr Model for Oxygen F= 16 V = 6 O Element Family # + Valence Electron Dot Diagram (LEWIS DOT) Oxygen

11. Bohr Model for Chlorine Row: # of Protons: # of Neutrons: # of Electrons: 3 17 36-17=18 17 P=17 N=18 2 8 7 What is the VALENCE? Element Information Bohr Model Chlorine

12. Bohr Model for Chlorine F= 17 V = 7 Cl Element Family # + Valence Electron Dot Diagram (LEWIS DOT) Chlorine

19. Which One?

20. Compound Which One?

21. Which One?

22. Which One? Element

23. Which One?

24. Mixture Which One?

25. Which One?

26. Which One? Element

27. Which One?

28. Which One? Compound