Across
- 3. mass Weight of element
- 5. Vertical columns on the periodic table
- 10. Dull, poor conductors, not reactive, gas
- 13. Abbreviation of Element
- 14. Made first periodic table of elements
- 16. Ingredients before reaction
- 18. Has positive charge
- 19. Has neutral charge
- 21. The number of atoms before and after a reaction are the same
- 24. Horizontal rows on the periodic table
- 25. Substance in simplest form
- 26. The center of an atom
Down
- 1. Electrons in the outermost layer
- 2. A reaction when heat is created
- 4. Two or more elements put together
- 6. Has negative charge
- 7. Ingredients produced after a reaction
- 8. Space outside of the nucleus
- 9. Form of matter that cannot be further broken down
- 11. Non-Reactive, stable
- 12. Have properties of metals and nonmetal
- 15. Creation of a solid
- 17. A reaction when heat is absorbed
- 20. Suggested that electrons move from one orbital to the other in large steps
- 22. Group of atoms linked together
- 23. Shiny, conductor, reactive, solid