Across
- 2. neutral subatomic particle
- 4. anything that has mass and occupies space
- 6. change where two substances that react and create new substances
- 8. the center of the atom
- 11. positive subatomic particle
- 12. change in appearance and or states
- 15. number of protons in a nucleus
- 16. the smallest form of matter that is unbreakable
- 17. negative subatomic particle
Down
- 1. characteristics that can be used to describe a substance
- 3. measure of atomic mass
- 5. categories where element belong to
- 7. material that can't be broken down into any simpler substance
- 9. matter that has only one element
- 10. vertical row in the periodic table
- 12. a table that organizes the elements based on there properties
- 13. matter that has two or more elements
- 14. horizontal row in the periodic table