ATOMIC PHYSICS

2. He observed that zinc plateszinc became positively charged when struck by light.
4. Each packet of energy is a quantum of energy called ____.
5. ______ function is the energy spent depending on the metallic surface.
8. A theory that states that light is made up of very fine particles, or corpuscles, which are emitted from sources at high temperature.
11. He is the first to detect the existence of EM waves and observed that radiation could eject electrons from metallic plates.
14. A curve that travel from the infrared region to the ultraviolet region.
15. Series of line in the spectrum of Hydrogen where in the ultraviolet region (nn to n = 1)
16. 1 _____ is equal to 10-10
17. The atom is almost empty, with its mass concentrated in a very small portion which he called the ____.
18. He proposed that atoms do not absorb or emit light continuously, but do so in a little chunk he called quantum.

1. An instrument used to detect radiation outside the visible spectrum.
2. Unit of frequency
3. When a piece of iron was heated, it emits ____ radiation which is felt as heat.
6. The highest energy of the hydrogen atom is in the __________ orbit.
7. Performed a series of precise experiments confirming the photon theory.
9. Series of line in the spectrum of Hydrogen where in the infrared region (nn to n = 3)
10. He found that a certain substance spontaneously emit charged particle (alpha particle).
12. First stationary state with a lowest energy.
13. The minimum amount of any physical entity involved in an interaction
19. At this frequency of the incident radiation, the KE of the ejected photon is zero.