Across
- 2. each horizontal row
- 6. element that has properties of metals and non metals
- 8. basic unit of chemistry
- 10. substance that undergoes change in a reaction
- 12. (2words) number of protons on an element
- 13. elements bonded together
- 15. (2words) outermost electron
- 18. absorption of energy
- 20. column of elements on the periodic table
- 21. a mixture of elements
- 22. center of an atom
- 23. elements that lacks properties of metal elements
- 24. code for a chemical element
Down
- 1. contains a neutral charge
- 3. contains a positive charge
- 4. (5 words) matter cannot be created or destroyed.
- 5. (2words) helped make the periodic table
- 7. contains a negative
- 9. substance produced from a chemical process
- 11. (2words) mass of an atomic particle
- 14. coating of metal
- 16. release of energy
- 17. (2words) the seven gasses from group 18 on the periodic table
- 18. a substance that can't be broken down
- 19. rings around nucleus
- 25. a element that is usually shiny and hard