COPY: Experiment 3: Flame Test and Atomic Spectra

Last updated over 5 years ago

19 questions

COPY: Experiment 3: Flame Test and Atomic Spectra

Last updated over 5 years ago

19 questions

This lab will be a little different than prior labs. You will be completing the lab virtually. You will still complete the lab in your lab notebook (to ensure that you have record of the lab) like you have before, but you will be answering all of the lab questions here. 

Here is how you will complete the lab: 

Read the background information below (or in the lab handout here: https://docs.google.com/document/d/10Me2VnpmUpWEfBoFQ8nat2Cus6Da7sPcLhx0-gScCMA/edit?usp=sharing). In the background information you will find the purpose. Record the purpose of the lab in your lab notebook. 

Complete the rest of your pre-lab in your lab notebook (procedure for both days and pre-lab questions). 

After you complete the pre-lab questions in your lab notebook, answer the questions here to recieve credit. 

Watch Part 1 of the lab. As you watch the video, record your data & observations in a data table in your lab notebook. (This will be in your data & observations section of your notebook.)

Complete Part 2 of the lab. This will require you to observe pictures of gas discharge tubes and the corresponding emission spectrum. Fill in your data table in your lab notebook. Again remember to label your each data table appropriately and use a ruler or straight-edge. 

Work through the post lab questions for both part 1 and part 2. Answer the post lab questions in your lab notebook and then answer certain questions here to receive credit. 

Finally, write your conclusion (purpose, was it fulfilled, why or why not) in your lab notebook. Then transfer it here to receive credit. 

As you work through the lab, send any questions through email or Remind.

Read the background information to review light and waves, as well as to find the purpose of the lab. Check below once you've read it.

0.5

Calculate the energy of this photon (in J). Give your answer to 3 SF.
Only include the number. You can use the format 3E-10 or

0.5

Convert this energy to kJ/mol.
Only give the numeric answer.

0.5

Read the procedure for Part 1 and record the procedure in your lab notebook (as you would for any pre-lab). Watch the flame test video below, recording all data in the data table. We did not examine the Sodium/Potassium combo or the unknown, so you do not need to record those in your lab notebook. 

As you work through the part 2 post lab questions (answering in your lab notebook as well), remember that the background provides lots of information that will be useful for these questions. 

Add your conclusion to your lab notebook. Remember that you need to reference both parts 1 & 2. 

Draggable item		Corresponding Item
Green		410 nm
Blue		434 nm
		486 nm

Draggable item		Corresponding Item
Red
Purple

Draggable item		Corresponding Item
4.86E-7		Red wavelength (m)
4.84E-19		Red Frequency (Hz)
3.03E-19		Red Energy (J)
4.58E-19		Blue-green Wavelength (m)
4.34E-7		Blue-green Frequency (Hz)
4.10E-7		Blue-green Energy (J)
4.09E-19		Blue Wavelength (m)
6.91E14		Blue Frequency (Hz)
6.56E-7		Blue Energy (J)
7.31E14		Violet Wavelength (m)
4.57E14		Violet Frequency (Hz)
6.17E14		Violet Energy (J)

Draggable item		Corresponding Item
Yellow-green		Copper
Orange		Barium
Bright red		Lithium
Yellow		Calcium
Lavender		Sodium
Blue-green		Potassium

Draggable item		Corresponding Item
		Hydrogen
		Helium
		Neon
		Argon
		Bromine
		Water vapor
		Carbon Dioxide
		Mercury

COPY: Experiment 3: Flame Test and Atomic Spectra

COPY: Experiment 3: Flame Test and Atomic Spectra

Read the background information to review light and waves, as well as to find the purpose of the lab. Check below once you've read it.

Calculate the energy of this photon (in J). Give your answer to 3 SF.
Only include the number. You can use the format 3E-10 or

Convert this energy to kJ/mol.
Only give the numeric answer.

Write your conclusion below. Reference both parts 1 & 2.

Read the background information to review light and waves, as well as to find the purpose of the lab. Check below once you've read it.

Calculate the energy of this photon (in J). Give your answer to 3 SF.
Only include the number. You can use the format 3E-10 or

Convert this energy to kJ/mol.
Only give the numeric answer.

The ionization energy of sodium is 496 kJ/mol. Would light with a wavelength of 400 nm be sufficient to cause sodium to lose its electrons? Explain why/why not.
(Hint: You just calculated the energy in kJ/mol for 400 nm light.)

Calculate the minimum wavelength of light (in nm) that would be needed to cause a single sodium atom to lose an electron.
Give only the numeric portion of the answer.

List the colors of visible light from highest energy to lowest energy.

List the colors of visible light from highest frequency to lowest frequency.

List the colors of visible light from shortest wavelength to longest wavelength.

How are the electrons excited during flame tests?

What particles are responsible for the production of light?

Why do different chemicals emit different colors of light?

Categorize the definitions/examples to the correct type of spectrum.

Each line in the emission spectra of hydrogen corresponds to an electromagnetic radiation with a specific wavelength.
Match the four observed colors with the correct wavelengths.

How are electrons excited in this part of the lab?

It has been calculated that the observed colors in a hydrogen atom correspond to the relaxation of the electron from a higher energy level to the second energy level.
Match the correct color to energy transition (think about how you know which color correponds to the transition).

Write your conclusion below. Reference both parts 1 & 2.

The ionization energy of sodium is 496 kJ/mol. Would light with a wavelength of 400 nm be sufficient to cause sodium to lose its electrons? Explain why/why not.
(Hint: You just calculated the energy in kJ/mol for 400 nm light.)

Calculate the minimum wavelength of light (in nm) that would be needed to cause a single sodium atom to lose an electron.
Give only the numeric portion of the answer.

Be sure to copy the data table in your lab notebook (and give it an appropriate number and title).

Match the correct colors to metal ions.

List the colors of visible light from highest energy to lowest energy.

List the colors of visible light from highest frequency to lowest frequency.

List the colors of visible light from shortest wavelength to longest wavelength.

How are the electrons excited during flame tests?

What particles are responsible for the production of light?

Why do different chemicals emit different colors of light?

Be sure to copy the data table in your lab notebook (and give it an appropriate number and title).

Match the color of discharge tube and number of lines to the correct element/compound.

Categorize the definitions/examples to the correct type of spectrum.

Each line in the emission spectra of hydrogen corresponds to an electromagnetic radiation with a specific wavelength.
Match the four observed colors with the correct wavelengths.

How are electrons excited in this part of the lab?

It has been calculated that the observed colors in a hydrogen atom correspond to the relaxation of the electron from a higher energy level to the second energy level.
Match the correct color to energy transition (think about how you know which color correponds to the transition).

COPY: Experiment 3: Flame Test and Atomic Spectra

COPY: Experiment 3: Flame Test and Atomic Spectra

Read the background information to review light and waves, as well as to find the purpose of the lab. Check below once you've read it.

Calculate the energy of this photon (in J). Give your answer to 3 SF. Only include the number. You can use the format 3E-10 or

Convert this energy to kJ/mol. Only give the numeric answer.

Write your conclusion below. Reference both parts 1 & 2.

Read the background information to review light and waves, as well as to find the purpose of the lab. Check below once you've read it.

Calculate the energy of this photon (in J). Give your answer to 3 SF. Only include the number. You can use the format 3E-10 or

Convert this energy to kJ/mol. Only give the numeric answer.

The ionization energy of sodium is 496 kJ/mol. Would light with a wavelength of 400 nm be sufficient to cause sodium to lose its electrons? Explain why/why not. (Hint: You just calculated the energy in kJ/mol for 400 nm light.)

Calculate the minimum wavelength of light (in nm) that would be needed to cause a single sodium atom to lose an electron. Give only the numeric portion of the answer.

List the colors of visible light from highest energy to lowest energy.

List the colors of visible light from highest frequency to lowest frequency.

List the colors of visible light from shortest wavelength to longest wavelength.

How are the electrons excited during flame tests?

What particles are responsible for the production of light?

Why do different chemicals emit different colors of light?

Categorize the definitions/examples to the correct type of spectrum.

Each line in the emission spectra of hydrogen corresponds to an electromagnetic radiation with a specific wavelength. Match the four observed colors with the correct wavelengths.

How are electrons excited in this part of the lab?

It has been calculated that the observed colors in a hydrogen atom correspond to the relaxation of the electron from a higher energy level to the second energy level.Match the correct color to energy transition (think about how you know which color correponds to the transition).

Write your conclusion below. Reference both parts 1 & 2.

The ionization energy of sodium is 496 kJ/mol. Would light with a wavelength of 400 nm be sufficient to cause sodium to lose its electrons? Explain why/why not. (Hint: You just calculated the energy in kJ/mol for 400 nm light.)

Calculate the minimum wavelength of light (in nm) that would be needed to cause a single sodium atom to lose an electron. Give only the numeric portion of the answer.

Be sure to copy the data table in your lab notebook (and give it an appropriate number and title). Match the correct colors to metal ions.

List the colors of visible light from highest energy to lowest energy.

List the colors of visible light from highest frequency to lowest frequency.

List the colors of visible light from shortest wavelength to longest wavelength.

How are the electrons excited during flame tests?

What particles are responsible for the production of light?

Why do different chemicals emit different colors of light?

Be sure to copy the data table in your lab notebook (and give it an appropriate number and title).Match the color of discharge tube and number of lines to the correct element/compound.

Categorize the definitions/examples to the correct type of spectrum.

Each line in the emission spectra of hydrogen corresponds to an electromagnetic radiation with a specific wavelength. Match the four observed colors with the correct wavelengths.

How are electrons excited in this part of the lab?

It has been calculated that the observed colors in a hydrogen atom correspond to the relaxation of the electron from a higher energy level to the second energy level.Match the correct color to energy transition (think about how you know which color correponds to the transition).

Calculate the energy of this photon (in J). Give your answer to 3 SF.
Only include the number. You can use the format 3E-10 or

Convert this energy to kJ/mol.
Only give the numeric answer.

Calculate the energy of this photon (in J). Give your answer to 3 SF.
Only include the number. You can use the format 3E-10 or

Convert this energy to kJ/mol.
Only give the numeric answer.

The ionization energy of sodium is 496 kJ/mol. Would light with a wavelength of 400 nm be sufficient to cause sodium to lose its electrons? Explain why/why not.
(Hint: You just calculated the energy in kJ/mol for 400 nm light.)

Calculate the minimum wavelength of light (in nm) that would be needed to cause a single sodium atom to lose an electron.
Give only the numeric portion of the answer.

Each line in the emission spectra of hydrogen corresponds to an electromagnetic radiation with a specific wavelength.
Match the four observed colors with the correct wavelengths.

It has been calculated that the observed colors in a hydrogen atom correspond to the relaxation of the electron from a higher energy level to the second energy level.
Match the correct color to energy transition (think about how you know which color correponds to the transition).

The ionization energy of sodium is 496 kJ/mol. Would light with a wavelength of 400 nm be sufficient to cause sodium to lose its electrons? Explain why/why not.
(Hint: You just calculated the energy in kJ/mol for 400 nm light.)

Calculate the minimum wavelength of light (in nm) that would be needed to cause a single sodium atom to lose an electron.
Give only the numeric portion of the answer.

Be sure to copy the data table in your lab notebook (and give it an appropriate number and title).

Match the correct colors to metal ions.

Be sure to copy the data table in your lab notebook (and give it an appropriate number and title).

Match the color of discharge tube and number of lines to the correct element/compound.

Each line in the emission spectra of hydrogen corresponds to an electromagnetic radiation with a specific wavelength.
Match the four observed colors with the correct wavelengths.

It has been calculated that the observed colors in a hydrogen atom correspond to the relaxation of the electron from a higher energy level to the second energy level.
Match the correct color to energy transition (think about how you know which color correponds to the transition).