Question

analysis for phet 1: 2. from your snapshot of the experiment in report question 1a, describe the experimental emission spectrum for atomic hydrogen. include in your description the colors (regions of the electromagnetic spectrum), estimated wavelengths, and relative numbers of stacked colored balls. these colored balls correspond to photons emitted by the?-box. (4 pts) 3. what happens when photons interact with the atom in dalton’s billiard ball model? (1 pt) a. the photons are absorbed by the atom b. the photons are absorbed, and then other photons are emitted c. the photons divide into smaller photons d. the photons deflect off the atom 4. for dalton’s billiard ball model is there an emission spectrum? (circle one) yes or no. (1 pt) 5. why do you think the dalton model does not include electrons? (1 pt) a. dalton thought electrons were unimportant. b. dalton placed electrons in the nucleus. c. the smallest particle in dalton’s model is the atom, which is indivisible. it does not include sub - atomic particles like electrons. 6. what happens when photons interact with the atom in the thomson’s plum pudding model? (select all that apply) (3 pts) a. the photon bounces off the atoms b. the electron changes position when struck by the photon c. a photon is absorbed, and a different photon emitted d. the positive charge proton glue interacts with the photon e. all emitted photons have the same energy 7. from your snapshot of the thomson’s plum pudding model in report question 1b, describe the resulting emission spectrum from thomson’s plum pudding model. is it “right”? explain the emission wavelengths from the spectrometer and compare to experiment from part1. written response on d2l (4 pts) 8. in the classical solar system model, what is the atom like? (1 pt) a. there is a nucleus where the proton resides. b. there is an electron in motion in a circular orbit. c. there are several possible orbits the electron may follow. d. all of the above. 9. what is the shortcoming of the classical solar system model model? (1 pt) a. too many are photons emitted in the visible region of the emission spectrum. b. too many photons are emitted in the uv region. c. the atom is not stable. the electron loses energy, spirals into the nucleus and the atom is destroyed. in this model atoms should not exist.

Explanation:

1. In Dalton's Billiard Ball model, atoms are considered as solid, indivisible spheres and photons cannot interact with them in complex ways like absorption - emission or division. Photons would simply deflect off the atom.
2. Dalton's model is a simple, non - quantum model where atoms are indivisible and there is no concept of energy levels within the atom to produce an emission spectrum.
3. In Dalton's model, the atom was considered the smallest, indivisible particle and sub - atomic particles like electrons were not known or included in his model.
4. In Thomson's Plum Pudding model, electrons are embedded in a positively charged sphere. When a photon interacts, the electron can change position (b), and a photon can be absorbed and a different one emitted (c).
5. In the Classical Solar System model, the atom has a nucleus where protons reside, and electrons move in circular orbits with several possible orbits.
6. The main shortcoming of the Classical Solar System Model is that according to classical electromagnetism, the electron would lose energy as it orbits, spiral into the nucleus and the atom would be destroyed, meaning atoms should not exist in this model.

Answer:

1. d. The photons deflect off the atom
2. No
3. c. The smallest particle in Dalton’s model is the atom, which is indivisible. It does not include sub - atomic particles like electrons.
4. b. The electron changes position when struck by the photon; c. A photon is absorbed, and a different photon emitted
5. d. All of the above
6. c. The atom is not stable. The electron loses energy, spirals into the nucleus and the atom is destroyed. In this model atoms should not exist.