Across
- 3. What element’s symbol is Ag
- 6. Symbol for Thorium
- 7. Atom is made up of a nucleus surrounded by an electron
- 8. Shell closest to nucleus
- 10. Subatomic particles with neutral charge
- 16. Number of electrons equals number of
- 19. A photon has a frequency of 2.35 x 104 Hz. Calculate its energy. Answer is 1. ___ x 10-
- 20. Protons are
- 22. Minimum amount of energy that can be gained or lost by an atom
- 23. “Atoms are mostly empty ___ “
- 26. Each element has its own atomic
- 27. Valence electrons are normally at ___ state
- 29. What element is Pt
- 31. What element’s symbol is Hs
- 32. Measured - accecpted/accepted x 100
- 36. Symbol for Iridium
- 37. Atomic weight of Magnesium rounded to nearest whole #
- 38. Makes up everything
- 39. What element is Nb
- 41. Atomic structure depend on ____ numbers
- 42. Atoms absorb
- 44. Every atom has this in its center?
Down
- 1. Light at a certain frequency causes ____ to eject their electrons
- 2. Speed of light equals ___ times frequency
- 4. Number of protons equals
- 5. Atoms are ___ particles
- 9. Symbol for tin
- 11. Atoms moves to ____ state after absorbing energy
- 12. 3.00 x 108 m/s
- 13. Wavelength usually measured in
- 14. ____ spectrum spans wavelength from about 400 to 700nm
- 15. Symbol for Nickel
- 17. When frequency goes up wavelength goes
- 18. What element is Ra
- 21. Orbits every atom’s nucleus
- 24. Symbol for Astatine
- 25. # of protons in boron
- 28. Mass number of Hydrogen rounded to nearest whole #
- 30. Atomic weight of Helium rounded to nearest whole #
- 33. Acronym for colors on the light spectrum
- 34. Electrons are
- 35. the upper left corner of a letter-symbol
- 40. Atomic weight of Lithium rounded to nearest whole #
- 43. Gold foil experiment
- 45. When frequency goes down wavelength goes