"Counting Atoms Color by Number" educational worksheet for kids, featuring a fun chemistry activity with a molecular diagram and color-coding.

- 1. H₂O: 3 atoms (2 H, 1 O) → Color: Red
- 2. CO₂: 3 atoms (1 C, 2 O) → Color: Red
- 3. O₃: 3 atoms (3 O) → Color: Red
- 4. Co: 1 atom (1 Co) → Color: Black
- 5. NaOH: 3 atoms (1 Na, 1 O, 1 H) → Color: Red
- 6. NaCl: 2 atoms (1 Na, 1 Cl) → Color: Blue
- 7. NH₃: 4 atoms (1 N, 3 H) → Color: Yellow
- 8. H₂CO₃: 6 atoms (2 H, 1 C, 3 O) → Color: White
- 9. CH₄: 5 atoms (1 C, 4 H) → Color: Orange
- 10. CH₃OH: 6 atoms (1 C, 4 H, 1 O) → Color: White
- 11. 2H₂: 4 atoms (4 H) → Color: Yellow
- 12. Ca(OH)₂: 5 atoms (1 Ca, 2 O, 2 H) → Color: Orange
- 13. 4H: 4 atoms (4 H) → Color: Yellow
- 14. 2Mg + O₂: 4 atoms (2 Mg, 2 O) → Color: Yellow
- 15. 2O₃: 6 atoms (6 O) → Color: White
- 16. Al(OH)₃: 7 atoms (1 Al, 3 O, 3 H) → Color: Green
- 17. CO₂ + H₂O: 6 atoms (1 C, 2 O, 2 H, 1 O) → Color: White
- 18. HCl: 2 atoms (1 H, 1 Cl) → Color: Blue
- 19. Fe₂O₃: 5 atoms (2 Fe, 3 O) → Color: Orange
- 20. H₂O₂: 4 atoms (2 H, 2 O) → Color: Yellow
- 21. HNO₃: 5 atoms (1 H, 1 N, 3 O) → Color: Orange
- 22. H₃PO₄: 8 atoms (3 H, 1 P, 4 O) → Color: Purple
- 23. 2H₂ + O₂: 6 atoms (4 H, 2 O) → Color: White
- 24. Mg(OH)₂: 5 atoms (1 Mg, 2 O, 2 H) → Color: Orange
- 25. H₂SO₄: 7 atoms (2 H, 1 S, 4 O) → Color: Green
- 26. MgO + C: 3 atoms (1 Mg, 1 O, 1 C) → Color: Red
- 27. C₂H₆: 8 atoms (2 C, 6 H) → Color: Purple
- 28. Og: 1 atom (1 Og) → Color: Black