Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Phet simulation models of the hydrogen atom

03/11/2021 Client: muhammad11 Deadline: 2 Day

Models of the Hydrogen Atom[footnoteRef:1] [1: Adapted from PHET Interactive Simulations and an activity by Trish Loeblein, University of Colorado, Boulder. This lab requires use of a computer running Microsoft Windows or OS X 10.9.5 or later with internet access.]

Objectives
· Visualize and describe different models of the hydrogen atom.

· Explain the predictions from each model of the hydrogen atom.

· Explain energy levels of electrons in the hydrogen atom.

Background Information
John Dalton proposed that each element is a tiny, indestructible particle called an atom. Dalton’s idea was that atoms of a given element have properties that distinguish them from of other elements. This lab will call Dalton’s model of the atom the Billiard Ball Model because billiard balls have properties that distinguish them from each other – color and pattern.

The Plum Pudding Model of the atom based on work by J. J. Thomson and Robert Millikan who separately showed negatively charged, small electrons can be “chipped” from the atom. So, based on their observations, the atom looks like a plum pudding - dried fruit held together by a custard or a mousse.

Just like the fruit can be “chipped” from the pudding, in the Plum Pudding Model electrons can be “chipped” from the atom. If electrons are negatively charged particles, the pudding must be a positively charged “sphere or cloud” to balance the difference between the charge on the electron and the rest of the atom.

Niels Bohr proposed the Bohr Model of the atom to explain how the structure of the atom changes when it undergoes changes in energy. Bohr’s idea was that the energy levels in an atom are quantized and that the amount of energy in the atom is related to the electron’s position in the atom. Quantized energy levels mean that the atom has specific amounts (levels) of energy. If the energy is quantized, the electron’s position in the atom is quantized as well.

In the Bohr Model, electrons in an atom are organized into discrete energy levels described as fixed circular orbits of the electron around the nucleus. The farther the orbit is from the nucleus, the higher the energy level.

The Schrödinger Model of the atom is based on work in Quantum Mechanics by famous scientists including Max Planck, Albert Einstein, Erwin Schrödinger, Werner Heisenberg, Max Born and others. In the Schrödinger Model, a dense nucleus makes up more than 99% of the atom’s mass and the electrons are dispersed in a cloud around the nucleus. Like the Bohr model, energy levels of the electrons are quantized, but in the Schrödinger model, energy levels of the electrons are split into several sublevels (aka subshells). Sublevels contain electron clouds in three dimensional shapes called orbitals.

Procedures
Part 1. Experimental Observation of Photons Beamed Through a “Box” of Hydrogen Atoms

1. Record observations answers to questions in these instructions. Questions must be answered completely with applicable scientific terms and concepts.

2. Download and Open the Simulation of “Models of the Hydrogen Atom” From Canvas or the PHET website: (https://phet.colorado.edu/sims/cheerpj/hydrogen-atom/latest/hydrogen-atom.html?simulation=hydrogen-atom

3. Make sure “Experiment” is highlighted white.

4. Turn the light beam “on.” Photons of different wavelengths (colors) flow from bottom to the top of the simulation.

5. Turn “Light Controls” to white.

6. Check the Show Spectrometer box next to the “Light Controls”.

7. Adjust the speed of the photons with the slider at the bottom of the simulation to fast and observe what happens while photons are being sent through a box of hydrogen atoms for at least 4 minutes.

8. What are the two things the spectrometer is recording?

i. :

ii. :

9. When determining how an atom works, scientists observed something like what you are observing now and proposed how the atom must be organized.

a. What do you observe about the color of the photons and about how many photons (intensity of lines in the visible spectrum) that are “deflected” from the box of hydrogen?

b. What do you think is making the photons “deflect” from the box of hydrogen atoms? Provide your own hypothesis.

Part 2. Understanding Different Models (Theories) of the Hydrogen Atom

10. Now that you have provided a hypothesis about what is happening to the photons, highlight the “Prediction” button and observe results of predictions from each model of the hydrogen atom.

Observe results of predictions from a “monochromatic” wavelength of 97 nm and results from white light. Record observations about photons, observations from the spectrometer and the energy level diagram.

· Note: The energy level diagram is not available in the Billiard Ball and Plume Pudding Models.

Observe for at least four minutes with fast and slow photon settings.

Complete the tables below.

a. Complete Observations of Predictions (what the model predicts) from the 4 models.

· Reset the spectrometer in between each model.

Atomic Model

Observations of Predictions (what the model predicts)

97 nm

White light

Billiard Ball

Plum Pudding

Bohr

Schrodinger

b. Explain how each model’s predictions do or do not explain the experimental observations.

Atomic Model

How does the model explain or not explain the experiment observations?

Billiard Ball

Plum Pudding

Bohr

Schrodinger

Part 3. Explain Details of Bohr’s Model of the Hydrogen Atom

11. With the Bohr’s model selected, click the “Show electron energy level diagram.”

12. Using information from the Electron Energy Level Diagram and the Spectrometer, describe in detail what is happening to the one electron in hydrogen as white light (continuous) photons are absorbed by the hydrogen atom.

This is more easily done with “slow” photons, takes time, and careful observation. You have three things to watch and interpret:

i. the n = 1,2,3… levels shown in the box on hydrogen

ii. the Energy Level Diagram

iii. information from the spectrometer.

Detailed description:

13. In the help menu, click on transitions. Enter each of the first 5 wavelengths into the wavelength box and describe what happens to the electron for each wavelength. This will take some time, especially for 94 nm wavelength.

Wavelength (nm)

Observations: what happens to the electron?

122

1 → 2

103

1 → 3

97

1 → 4

95

1 → 5

94

1 → 6

14. Which one wavelength from #13 produces the same emission spectrum with the same wavelengths as the emission spectrum from white light? Explain why the one wavelength does produce the same spectrum as from white light and the other four wavelengths do not produce an emission spectrum. Hint: consider how different wavelengths are produced in an emission spectrum.

15. Do observations from steps #13 and #14 support your ideas in #9? If not, readjust your statement to explain you new ideas about the behavior of the electron.

16. Now enter one wavelength that is not listed in the help menu under transitions. What do you observe? Does this support your ideas? Explain.

17. What did you learn from this lab?

18. Extra Credit: Explain what is happening in the Planetary model and de Broglie model simulation predictions of the hydrogen atom.

Finished Lab Report – Submit on Canvas

Submit your completed lab report (these instructions) on Canvas as a single pdf file.

Neatness counts toward your report score.

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Professor Smith
Assignment Hut
Math Guru
Isabella K.
Accounting & Finance Master
Quality Homework Helper
Writer Writer Name Offer Chat
Professor Smith

ONLINE

Professor Smith

I can assist you in plagiarism free writing as I have already done several related projects of writing. I have a master qualification with 5 years’ experience in; Essay Writing, Case Study Writing, Report Writing.

$26 Chat With Writer
Assignment Hut

ONLINE

Assignment Hut

I am an academic and research writer with having an MBA degree in business and finance. I have written many business reports on several topics and am well aware of all academic referencing styles.

$41 Chat With Writer
Math Guru

ONLINE

Math Guru

As per my knowledge I can assist you in writing a perfect Planning, Marketing Research, Business Pitches, Business Proposals, Business Feasibility Reports and Content within your given deadline and budget.

$37 Chat With Writer
Isabella K.

ONLINE

Isabella K.

I will be delighted to work on your project. As an experienced writer, I can provide you top quality, well researched, concise and error-free work within your provided deadline at very reasonable prices.

$36 Chat With Writer
Accounting & Finance Master

ONLINE

Accounting & Finance Master

I can assist you in plagiarism free writing as I have already done several related projects of writing. I have a master qualification with 5 years’ experience in; Essay Writing, Case Study Writing, Report Writing.

$40 Chat With Writer
Quality Homework Helper

ONLINE

Quality Homework Helper

This project is my strength and I can fulfill your requirements properly within your given deadline. I always give plagiarism-free work to my clients at very competitive prices.

$19 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Logical framework template excel - 978-1-259-73278-2 - Creditors claims on the assets of a company are called - Subtracting scientific notation with negative exponents - Limiting reagent lab the reaction between vinegar and baking soda - It research analyst job description - The shallows chapter 6 summary - The cellist of sarajevo chapter summary - Tableau problem homework to be done in Tableau format - Lg cassette ac catalogue - List of community concerns - Calvin goddard contribution to forensic science - Concept map for major depressive disorder - Amek angela for sale - Preguntas answer the questions affirmatively using complete sentences - Temperature conversion answer key - Business management assignment questions and answers - Maritime industry in south africa - Physics - Our broken constitution analytical essay - Interpreting bias - Postcode for gisborne nz - Forza t5 super strength - Gear types and characteristics - How are photosynthesis and cellular respiration alike - Shiloh by bobbie ann mason full story - The biological roots of heat-of-passion crimes and honor killings - Cdhp basic full hap epa - Ecological niche worksheet answers - Which of the following statements regarding fixed costs is incorrect - John the savage alienation - Steady state error example - Rainwater tanks coffs harbour - Compare and contrast essay - Distribute rows evenly excel - Marketplace simulation strategy - Adding scalar multiples of vectors graphically mastering physics - Research Paper 3-4 pages - Need Paper 4 pages, APA format , 5th edition, 8 reference - Intercultural Communication - Apec study centre rmit - Marshall home garden sphere iron gothic trellis - Ka and kb values table - Fahrenheit 451 character analysis - Unit test part 2 polynomials - 1999 leonora m cohen osu school of education - ACC 499 Week 10 Discussion "Case C18-5: Deferred Tax Assets and Liabilities" - Cinderella writing paper - The "portfolio effect" in capital budgeting refers to - Can you eat blobfish - Survey Jazz - 1 Discussion - Problem set - Assignement - Www aida live com audios - Angel opal aura quartz - Motorola mobility swot analysis - Www linkedin com checkpoint lg login submit - Melting point of impure benzoic acid - Targeting minorities is a sound business practice - For a psychology major - Perseus and the lightning thief - Islamic culture ISLAM IN AMERICA - EH 13 - Liquor producer and distributor financial ratios - Kyr 35gw x1c manual - Discussion Question - Coraline chapter 3 summary - Https www wpsic com edi edi forms shtml - Erina fair to gosford station - Ethical Decision Making - Foundations of Financial 4 - bound - A plastic ocean worksheet - Fronius ig 15 inverter - Week 7 Discussion 2 - Pla tensile strength psi - Ipt multiple choice questions - Data Analytics - Technology - Gartner magic quadrant business intelligence 2018 - Five students took a math test - How to write clincher - Creating and interpreting a demographic table - I want to be australian superwog - Week 4 Discussion MAT 510 - Jimmy lafave net worth - Dr alison cronin mbe - Naming worksheet 2 naming molecular compounds - 2 paragraph - Wil bot wireless interactive listening robot - The specific gravity of gasoline is approximately - Practical Connection Assignement - Convex lens ray diagram worksheet - Year 9 ecology worksheets - Literature kc value for fescn2+ - Analysis of a poem - Summary: Read The Case of Plant Relocation and complete the questions at the end of the case study(URL) - Clapham common leisure centre swimming pool - Interpret the mean and median in plain non technical terms - Discussion Response 2 - Lizard evolution virtual lab module 2 answers - Disa acas best practices guide