Across
- 3. The _________________________ states that light at a certain frequency causes metals to eject their electrons. Below a certain frequency, no electrons will eject no matter the brightness of the light.
- 4. What does the first number represent in electron configuration? Ex: 1s2
- 6. The equation 6.626 * 10^-34 is ________ _________.
- 7. Electrons occupy the lowest energy available.
- 8. Protons + Neutrons = _____
- 10. Which element has the atomic number of 47?
- 15. What is the measurement for Hz?
- 17. Atoms absorb energy and become _______.
- 18. Most particles were ___________ in Rutherford’s experiment, concluding that “atoms are mostly empty.”
- 23. In the equation E=hv, the v represents the frequency of _____________ and can be also written as f (E=hf).
- 26. The minimum amount of energy that can be gained or loss by an atom.
- 29. Which element has 84 protons?
- 32. _______ are atoms with a negative charge that have more electrons than protons.
- 35. The four characteristics of waves are wavelengths, crest, ___________, and trough.
- 36. What is the atomic number of Yttrium? (round to the nearest whole #)
- 37. What is the acronym for the different wavelengths in the visible region?
- 38. speed of light = wavelength * ____________
- 40. Atoms with a positive charge have fewer electrons than protons are called ________.
- 41. What kind of electromagnetic radiation is 2.73 x 10^-2?
- 42. How many electrons are in the element of Cd?
- 43. How many protons are there in the element Na?
- 45. The relationship between frequency and wavelength is that they are ________ proportional to each other.
Down
- 1. The visible spectrum spans the wavelength region from about ___ to 700nm. (answer ex: twohundred)
- 2. How many electrons are there if Nickel (Ni) has a charged atom of 4+?
- 5. How many electrons are there if Tin (Sb) has a charged atom of 3-?
- 9. Atoms are made up of __________ particles.
- 11. Lower frequency waves have _______ wavelengths.
- 12. The ______ of the emitted photon determines the frequency (color) of photons.
- 13. Each element’s ____ is unique and can be used to identify it.
- 14. The wave formula for the _______ __ _______ is c =λν.
- 16. Atomic Mass - Protons = __________
- 19. What subatomic particle orbits around the nucleus?
- 20. Convert 465nm to m (1 nm =1x10-9m). Which electromagnetic radiation is 4.65 * 10^-7 m in?
- 21. How many columns are in the p orbital in the periodic table?
- 22. What size of the wavelength is 10^-6?
- 24. What is the shape of the d orbital?
- 25. How many neutrons does the element Cu have if the atomic mass is 64?
- 27. How many neutrons does Ge have? (answer in sigfigs)
- 28. According to Rutherford’s experiment, an atom is mostly ______ space.
- 30. The _________ wavelength is most damaging.
- 31. HIGH Amplitude Wave = HIGH ________ Energy
- 33. ________ are atoms with the same # of protons but different #s of neutrons.
- 34. How many subshells are in an atom?
- 39. Number of Electrons = _________
- 44. As the color of ______ changes, so does the amount of energy it possesses.