Across
- 2. a coating of another substance
- 5. substance being changed in a chemical reaction
- 7. center of an atom
- 8. outer most electron
- 13. two or more elements combined together to make one
- 15. unique conducting properties, in most computers
- 16. most elements are this
- 18. rows of elements, starts far left of table (1-7)
- 21. creator of the periodic table
- 22. carries a neutral charge
- 23. these are on the far right of the table, not reactive to other elements ex. Helium
Down
- 1. column of elements, starts top left of table (1-18)
- 3. anything can change into the three states of matter
- 4. mass of the element
- 6. smallest part of any chemical property
- 7. elements that are not metals
- 9. energy absorbed to cool down
- 10. energy released in a form of heat
- 11. set of protons/electrons (2,8,8,2)
- 12. number of protons/electrons
- 14. substance manufactured for sale
- 17. this cannot be broken down smaller, smallest in the universe
- 19. carries a negative charge
- 20. carries a positive charge
- 24. substance that is naturally formed or manmade
- 25. two or one letters telling the element name