Across
- 6. number of protons and neutrons in an atom
- 10. positive charged subatomic particle
- 11. added or taken away during a phase change
- 12. type of change where bonds break and new form
- 13. number of electrons the first energy shell holds
- 15. stuff(atoms) an object is made of
Down
- 1. mass per unit volume of a substance
- 2. vertical columns of the periodic table
- 3. electrons in the outer shell of atom
- 4. bond formed by atoms sharing electrons
- 5. phase of matter with no fixed volume or shape
- 7. compound from one or more elements sharing e-
- 8. bond formed between atoms by gaining or losing e-
- 9. horizontal rows of the periodic table
- 14. ability to be hammered into thin sheets