Across
- 4. regions of space outside nucleus
- 7. creator of Periodic Table
- 8. properties between a metal and non metal
- 9. very outer electrons
- 13. element compounds that are in solutions that form hydroxides
- 15. absorbs energy
- 16. smallest part of an element
- 18. mass of an atom of a chemical element
- 21. positively charged center of an atom, very high density
- 22. any gas in Group O
- 23. composed of two or more separate elements
- 26. a row of elements
Down
- 1. matter can be changed from one form to another
- 2. a part or aspect of something abstract
- 3. a thin coating of gold, silver, or other metals
- 5. same number of protons and electrons
- 6. no characteristics of a metal and able to conduct heat
- 10. move around nucleus and has a negative charge
- 11. releases energy
- 12. a substance that takes part in and changes in a reaction
- 14. found in nucleus and has a positive charge
- 17. in the nucleus and has no electric charge
- 19. a group of atoms bonded together
- 20. abbreviation or short representation of an element
- 24. the result of a chemical reaction
- 25. a column of elements