Ok so im just totally confused because i don't technically have chemistry teacher (i have cancer so i cant go to school so while i have a teacher i can email questions to, he doesnt really help so im stuck teaching myself) & i didn't get any reference to make i sure i got my answers right (meaning I have to come up with the answers from my head...), so i need help checking to make im right and with answering one.

Question

-Completion (the answers i put are the one in caps)

According toquantum mechanics, the motions of subaomic particles may be described as WAVES. The frequency and wavelength of all waves are NOT PROPORTIONALLY related. Every element emits ENERGY if it is heated by passing an electric discharge through its gas or vapor. Passing this emission through a prism gives the COLOR of the element. The quantum concept developed from Planck's studies of LIGHT and Einstei's explanation of the PHOTOELECTRIC effect. Planck showed that the amount of radiat energy absorbed or emitted by a body is proportional to the FREQUENCY of th radiation.

Do those make sense?

-True/False(the answers I could put are either AT [for Always true], ST [sometimes true], or NT [never true])

NT- The speed of light is a constant that can be obtained ny dividing the frequency of light by its wavelength

NT- The amplitude of a wav is the distance between the crests

AT- the energy of a body can change only in small discrte units

ST- the position and velocity of an electron in an atom can be determined with great certainty

NT- The photoelectric effect will occur no matter whatfrequency of light strikes a metal.

Did I get those right?

-Matching
1.photon- light quanta
2.de Broglie's equation- predicts that all matter exhibits wavelike motions
3.visible ight- example of electromagnetic radiation
4. ground state- the lowest energy level for a given electron
5. wavelength- the distance betweentwo consecutive wave crests

again, are these right?

-Questions and problems
What is the frequency of radiation whose wavelength is 2.40x10^-5?
i got 1.25x10^15 Hz

Apply quantum theory to explain the photoeectric effect.
*I don't get this question at all. can someone please help??

Answer 1

frequence and wavelength are INVERSELY PROPORTIONAL (frequence*wavelength=speedlight)

You have several wrong:

NT- The speed of light is a constant that can be obtained ny dividing the frequency of light by its wavelength
NT- The amplitude of a wav is the distance between the crests

On the last, http://en.wikipedia.org/wiki/Photoelectric_effect#Modern_view

see Modern view, however, you texts may think the "tradional" view is the "modern", and rely on the particle explaination. Review your text to see how outdated it is.
ST- the position and velocity of an electron in an atom can be determined with great certainty

What is the frequency of radiation whose wavelength is 2.40x10^-5?

if your wavelength is in meters, wrong.

Apply quantum theory to explain the photoeectric effect.

Answer 2

The first paragraph is confusing and I can't help for heach sentence jumps from one topic to another and there is no "thread" to help. I suggest you retype these, post one question at a time, and give the other possible answers plus your answer (in caps works ok).

The true/false questions look ok except for the speed and position of the electrons. If you know one you CANNOT know the other.

The matching looks ok. Note that quanta is the plural; therefore, I would say that a photon is a quantum of energy.

You didn't type any units for the 2 x 10^-5 wavelength. If that is cm, your answer is right; otherwise, no.

Here is a site to read about the photoelectric effect.
http://en.wikipedia.org/wiki/Photoelectric_effect

Answer 3

i am sorry