Atoms do not emit and absorb light continuously but do it in little chunks. Each chunk is called

a (a)  

One quantum of light energy is called a (a)  

The energy of a photon is directly proportional to the photon’s (a)  

When the energy E of a photon is divided by its frequency f, the quantity that results is known as (a)  

The (a)   is the ejection of electrons from certain metals when light fall upon

them.

These metals in (6) above is said to be (a)  

The photoelectrical effect depends on the (a)   of light that shines on the metal

The photoelectrical effect suggests that ........ interacts with ........ as a stream of particle-like

photons

(a)  

Light behaves like ....... when it travels in empty space, and as ........when it interacts

with ........matter

(a)  

De Broglie suggested that all matter could be viewed as having wave (a)  

In the .........model of the atom, the .......... orbits correspond to different energy............

(a)  

According to de Broglie’s theory of matter waves, ....... orbits exist only where an electron

wave .........in on itself in phase

(a)  

De Broglie suggested electrons have a (a)  

According to de Broglie, electron orbits exist only when the .............. of the orbit is a

.................multiple of the wavelength

(a)  

According to de Broglie, when the wave does not close in on itself in phase, it undergoes (a)  

In a simplified version of de Broglie’s theory of an atom, the waves are shown only in ...........

paths around the nucleus. In an actual atom , the standing waves make up ........... and

............. shells rather than flat, circular ones

(a)  

The radii of the electron orbits in the Bohr model of the atom are determined by the amount of

(a)   in the nucleus

The branch of physics that is the general study of the micro-world of photons, atoms, and nuclei

Is called (a)  

The ............ interactions described by quantum mechanics are governed by laws of

................., not laws of certainty

(a)