Across
- 2. The distance between crest?
- 5. The percent by mass of each element in a compound ?
- 8. What is it called when the high energy of a photon is emitted?
- 11. Both sides of the equation have the same number of atoms of both elements?
- 13. of energy levels on the periodic table ?
- 16. This can be broken down into smaller and more functional particles?
- 17. Who arranged the periodic table in the order of atomic numbers?
- 18. What is it called when an atom has the same amount of protons and a different number of neutrons?
- 19. The horizontal row that corresponds to the
Down
- 1. This shows a wide range of physical and chemical properties?
- 3. when electrons occupy orbitals of the lower first energy?
- 4. The number of protons in a nucleus of an atom?
- 6. A type of ion with a positive charge ?
- 7. Measures matter by count,mass or volume?
- 9. A type of ion with a negative charge ?
- 10. This is the smallest particle of an element that keeps its identity?
- 12. This contains protons and neutrons ?
- 14. A attractive force that holds the nucleus together?
- 15. C,He,Ar are examples of ?