2.05 Atomic Energy Virtual Lab Report
Instructions: Complete all sections of this report and answer all questions in complete sentences for full credit.  Use the grading rubric before you begin. 
General lab sections help (everything before the data)
Click here to watch the lab completion video. We show the entire lab simulation (so you can record the data; don’t need to be logged into the course) and explain the conclusion/post lab
Title: 
Objective(s): 
Hypothesis: Select the hypothesis that you believe best suits this lab (delete the other one)
●	Each emission spectrum will produce its own unique element that can be used to determine the composition of a newly discovered star.
●	Each heated element will produce its own unique emission spectrum that can be used to determine the composition of a newly discovered star.
Materials: What scientific equipment, tools, and chemicals were used to collect data in the simulation? (Record the materials in the box below as you work through the simulation.)

Part I Materials
(Be Specific)	Part II Materials
(Be Specific)	
	 	
Variables:
Remember the three variables: independent (what is tested or changed on purpose), dependent (what is the outcome or observed measurement), and controlled (everything else that is kept the same). List variables below as you work through the simulation.
Variables	Part I 	Part II 	
Independent (only 1)
What we change on purpose			
Dependent (only 1)
What we measure as a result. 			
Controlled (1 is given, please list the rest)
Everything else must stay exactly the same.  One for each trial has been given to you. Please record the rest of them	test tube,  	prism, 	
 
Procedure: No written procedure is needed for this virtual experience. However, it is important that you understand the experimental design of this lab for the conclusion section.
Data: Record your measurements below using the correct number of significant figures. The saved results of your measurements can also be found by selecting the data table button within the virtual lab. Note: First trials have been completed as a model. You still need to go through trial 1 in the simulation.
Part 1: Flame Tests
Element	Color Description	
Barium	Light green throughout the flame	
Calcium	 	
Sodium	 	
Rubidium	 	
Potassium	 	
Lithium	 	
Unknown One	 	
Unknown Two	 	
Part II: Spectrometry
How to read the wavelengths		Use this to evaluate the Star's spectrum 
Use this to compare all the spectra with the Star

Spectrum Line	Hydrogen
9 lines	Helium
5 lines	Neon
10 lines	Mercury
8 lines	Star
This will just appear after Mercury	
1	purple, 410 nm	 	 	 	 	
2	blue, 440 nm	 	 	 	 	
3	green, 510 nm	 	 	 	 	
4	light green, 540 nm	 	 	 	 	
5	light green, 550 nm	 	 	 	 	
6	yellow, 570 nm	 	 	 	 	
7	red, 650 nm	 	 	 	 	
8	red, 680 nm	 	 	 	 	
9	red, 700 nm	 	 	 	 	
10	 	 	 	 	 	
If possible, it might be helpful to take a screenshot of the elements from the Compare tab in the lab to help with conclusions.

Conclusion Response: 	

Post-Lab Connection Questions:
Answer questions in complete sentences.

1.	In Parts I and II of the lab, how did the electrons of each element help to produce the different colors of light? Explain your answers using important terms from the lesson and information provided in the laboratory. (Hint: refer to the diagrams in this lesson and the description at the beginning of part 1 in the interactive).  Picture of the process)
Answer: 
 
2.	Stars composed of mostly light (less massive) elements, such as hydrogen and helium, are often younger stars. Based on your data, is the newly discovered star a younger or older star? Explain your answer.  (Hint: refer to your data in part 2 only)
Answer: