Slide 1 / 70 Slide 2 / 70 1 According to Einsteins view of matter - - PDF document

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1 According to Einstein’s view of matter and energy, what is the common link between light and matter?

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2 What is Chemistry?

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3 How does diffraction effect the double slit experiment?

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4 The wavelength of light emitted from a traffic light having a frequency of 6.15x10 14 Hz is _________.

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5 An electromagnetic wave has a frequency of 6x 105

• Hz. What is the wavelength?

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6 An electromagnetic wave has a wavelength of 5x 10-13 m. What is the frequency?

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7 An electromagnetic wave has a frequency of 9x10 -

7 Hz. What is the wavelength?

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8 What is the frequency of yellow sodium light that has a wavelength of 579nm?

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9 Electromagnetic radiation with a wavelength of ________ nm appears as green light to the human

• eye. The frequency of this light is 5.71x10 14 Hz.

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10 Explain Newton’s original ideas about the nature

• f light.

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11 While standing in a room with two speakers (speakers A and B), each emitting sound with a wavelength of 2m, you notice you cannot hear the

• sound. Compared to the closer speaker, what’s

the smallest difference in distance to the further speaker (ignore reflection of sound off of walls etc).

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12 While standing in a room with two speakers (speakers A and B) centered about the center of the room, pointed at the wall. You notice you cannot hear the sound while standing 1 meter from the center of the far wall. What’s the next distance from the center you could stand at that would you to hear the sound at its loudest?

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13 How are matter and energy related?

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14 Why is the understanding of energy and matter vital to one’s understanding of Chemistry?

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15 How does interference effect the double slit experiment?

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16 A radio station broadcasts at 101.5 MHz. The wavelength of the signal is __________ m.

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17 An electromagnetic wave has a wavelength of 1.5

• nm. What is the frequency?

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18 An electromagnetic wave has a wavelength of 5x 10-13 m. What is the frequency?

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19 An electromagnetic wave has a wavelength of 300

• m. What is the frequency?

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20 What is the frequency of orange lithium light that has a wavelength of 650nm?

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21 An FM radio station broadcasts electromagnetic radiation at a frequency of 99.5 MHz. The wavelength of this radiation is __________ m.

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22 What is the frequency, in Hz, of electromagnetic radiation that has a wavelength of 0.55 m?

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23 What is the frequency of light, in Hz, that has a wavelength of 1.23x10 -6 cm?

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24 What is the wavelength of light (nm) that has a frequency of 3.22x10 14 Hz?

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25 What is the wavelength of light (nm) that has a frequency 4.25x10 14 Hz?

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26 Explains Hyugen’s original ideas about the nature

• f light.

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27 How are the properties of fluids in a tank, sound from a set of speakers, and light passing through a double slit all related to one another?

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28 While standing in a room with two speakers (speakers A and B) centered about the center of the room, pointed at the wall. You notice you cannot hear the sound while standing 1 meter from the center of the far wall. What’s the next distance from the center you could stand at that would still prevent you from hearing the sound.

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29 What is the energy of a photon that has a frequency of 7.0 x 10 15 Hz?

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30 What is the energy of a photon that has a frequency of 4.5 x 10 15 Hz?

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31 What is the energy of a photon that has a wavelength of 720 nm?

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32 Electromagnetic radiation with a wavelength of 531 nm appears as green light to the human eye. The energy of one photon of this light is 3.74 x10 -

19 J. Thus, a laser that emits 2.3 x10 -2 J of energy

in a pulse of light at this wavelength produces __________ photons in each pulse.

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33 The wavelength of a photon that has energy of 5.65 x 10-19 J is __________ nm.

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34 What is the frequency (Hz) of a photon that has energy of 4.38 x 10 -18 J?

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35 The energy of a photon that has a frequency of 7.75 x 1014 Hz is __________ J.

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36 What is the energy of a photon that has a wavelength of 450 nm?

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37 Electromagnetic radiation with a wavelength of 525 nm appears as green light to the human eye. The energy of one photon of this light is __________ J.

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38 The energy of a photon that has a wavelength of 10.0 m is __________ J

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39 What implication does the equation ρ=h/λ have on how we view matter or anything with momentum.

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40 What is the wavelength of an electron which has a velocity of 3.5 x 10 7 m/s? (me = 9.11x10-31 kg)

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41 The de Broglie wavelength of a 12.0 gram bullet traveling at the speed of sound is _________ m. The speed of sound is 331 m/sec.

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42 The de Broglie wavelength of an electron with a velocity of 6.00 x10 6 m/s is __________ m. (m e = 9.11x10-31 kg)

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43 What is the wavelength of an electron which has a velocity of 6.0 x 10 7 m/s? (me = 9.11x10 -31 kg)

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44 Why would the dual nature of matter make it difficult to observe very small particles like electrons?

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45 What is the wavelength of an electron which has a velocity of 1.2 x 10 8 m/s? (me = 9.11x10 -31 kg)

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46 The de Broglie wavelength of a 10.0 gram whip traveling at the speed of sound is _________ m. The speed of sound is 331 m/sec.

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47 The de Broglie wavelength of an electron with a velocity of 1.30 x10 7 m/s is __________ m. (m e = 9.11x10-31 kg)

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48 What is the wavelength of an electron which has a velocity of 4.0 x 10 7 m/s? (me = 9.11x10-31 kg)

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49 Why do neutral atoms have the same numbers of protons and electrons?

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50 What about electrons allow them to be some of the fastest traveling sub atomic particles?

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51 Why was it important to use alpha particles in

• rder to discover the neucleus, as opposed to

gamma rays or beta particles?

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52 Based on Bohr’s model of the atom, why do you think electrons were the first subatomic particle to be discovered?

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53 Based off of the first experiments into the composition of atoms, why were neutrons the last particles to be discovered?

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54 As more and more protons enter the nucleus of an atom, increasing ratios of neutrons are needed. Why do you think this is?

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55 Why is it not possible for an electron to continue in a set orbit around the nucleus like a planet around the sun?

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56 Explain how emission spectra of gasses helped scientists to determine electrons traveled in energy levels.

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57 Give one example of black body radiation that you see in your everyday life.

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58 The binding energy of the hydrogen atom in its ground state is -13.6 eV. What is the energy when it is in the n = 4 state?

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59 What is the energy of the second excited state (n= 3) of hydrogen?

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60 What is the energy of the ground state (n=1) of hydrogen?

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61 How much energy does an electron in hydrogen need as it jumps from ground state to the second excited state?

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62 If an electron returns from the second excited state to ground state, what 3 Energies of photons could it emit?

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63 If an electron returns from the second excited state to ground state, what 3 frequencies of photons could it emit?

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64 A Hydrogen electron drops from its sixth excited state back down to its forth excited state.

A What are the n values associated with these two states? B

How many different types of photons can it emit?

C

What is change in energy (in eV) associated with each transition?

D

What is the frequency associated with each of the emitted electrons?

E

What is the wavelength associated with eachof the emitted electrons?

F

What possible types of electromagnetic radiation are given

• ff during this transition?

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65 In state n = 1, the energy of the hydrogen atom is - 13.58 eV. What is its energy in state n = 2?

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66 The wavelength of a ruby laser is 694.3 nm. What is the energy difference (in eV) between the two energy states involved in laser action?

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67 If an electron returns from the second excited state to ground state, what 3 wavelengths (in nm)

• f photons could it emit?

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68 If an electron returns from the second excited state to ground state, what 3 types of EM Radiation could it emit (if visible light is emitted, include the color)?

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69 The electron of a hydrogen atom makes a transition from the n = 5 state to the n = 2 state. What is the wavelength of the emitted photon?

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70 A Hydrogen electron drops from its forth excited state back down to its first excited state.

A What are the n values associated with these two states? B

How many different types of photons can it emit?

C

What is change in energy (in eV) associated with each transition?

D

What is the frequency associated with each of the emitted electrons?

E

What is the wavelength associated with eachof the emitted electrons?

F

What possible types of electromagnetic radiation are given

• ff during this transition?