Across
- 3. change that doesn't create any new chemicals
- 6. the atom with electron configuration 2,6
- 10. has no charge
- 12. this atom has 7 protons
- 13. change that creates new chemicals
- 17. the materials produced by a chemical reaction
- 18. the rule that determines how many electrons fill the outermost shell of an atom
- 22. negative part of the atom
- 24. this atom has an atomic mass of 7
- 26. atoms found on the right of the periodic table
- 27. metals ______ electrons
- 28. centre of the atom
Down
- 1. the number that tells how many protons and neutrons are in the nucleus
- 2. name for electrons found in the outermost shell
- 4. an atom that has an overall charge
- 5. has atomic number 79
- 7. nonmetals _______ electrons
- 8. a vertical column on the periodic table
- 9. name for a negative ion
- 11. makes up all matter
- 14. the number that tells how many protons an atom has
- 15. positive subatomic particle
- 16. a row on the periodic table
- 19. name for a positive ion
- 20. number of electrons that fit in the first shell
- 21. the materials used up in a chemical reaction
- 23. number of electrons that fit in the second electron shell
- 25. types of atoms found on the left of the periodic table