Across
- 2. substance in simplest form
- 4. Center where protons and neutrons are
- 8. non-reactive, stable
- 10. carry a positive charge
- 12. a reaction when heat is absorbed
- 13. suggested that electrons moved from on orbital to another
- 14. ingredients produced after a reaction
- 16. The number of protons in a nucleus
- 17. Does not conduct electricity, brittle
- 19. Outermost shell of an atom
- 20. Ingredients before reaction
- 21. A column on the Periodic Table
- 24. Amount of protons and neutrons in the atom
- 25. Regions of space where the electrons might exists
- 26. Abbreviation for something
Down
- 1. carry a neutral charge
- 3. carry a negative charge
- 5. Two or more elements put together
- 6. Made up of atoms
- 7. a reaction when heat is created
- 9. Horizontal line across the periodic table
- 11. Scientist that made the periodic table
- 14. creating a solid
- 15. number of atoms before and after a reaction
- 18. solid, shiny, good conductor, ductile, malleable
- 22. Having properties of metals and non-metals
- 23. another word for an element