Across
- 3. what is produced by the reaction
- 7. part of an atom with a negative charge
- 9. smallest unit of an element
- 10. releases energy
- 11. cannot be separated, two or more different elements
- 13. rows of elements
- 15. abbreviation for an element
- 16. total amount of atoms in a substance does not change
- 19. what you put in the bag
- 20. part of an atom with no charge
- 24. partially conduct electricity, cross between metal and nonmetal
- 25. hard, shiny, malleable, and ductile
- 26. a substance that forms our universe
Down
- 1. columns of elements, same valence electrons
- 2. a group of atoms bounded together
- 4. part of an atom with a positive charge
- 5. an electron in the outermost orbital
- 6. number of protons are nuetrons in an atom
- 8. brittle, not malleable, not ductile, and poor conductors
- 12. takes in energy
- 14. invented the periodic table
- 17. number of protons and electrons
- 18. path of an electron
- 21. center of atom, positive charge, includes protons and electrons
- 22. outer coating made of metal
- 23. ten valence electrons, do not combine