Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Do question 4 please and make your handwriting clear

Transcribed Image Text:The identity of the unknown ion is Lithium, Lit. Because, the flame color of an
unknown ion is pink.Each element has its own characteristic emission spectrum.
From the given data, the only ion that gives a pink color on flame test is Lithium.
The principle behind flame test is - when the metal ion is heated, the atoms in it
absorb the energy and gets excited to higher energy levels and when they return
to the original level, emits energy in the form of visible light.
CONCLUSIONS/REFLECTIONS: Please answer the following questiion in the blue box
provided.
1. What evidence observed in this lab
could be used to support the theory that
electrons are found in definite energy levels
around the nucleus?
2. Explain how light is emitted when an
element gets excited.
3. How might emission spectra be used in
studying stars?
4. Why do you suppose that larger
elements such as neon produce more color
bands (i.e. line spectra) than smaller
elements ke hydrogen?

Transcribed Image Text:Accessibility
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Data Table 2: Flame Colors of Metallic lons
CHEMICAL
NAME &
FLAME COLOR OBSERVATIONS
FORMULA
Calcium, Ca*
orange
Lithium Li
pink
Sodium, Na
orange
Strontium, Sr
огаnge
Barium, Ba
orange
Copper (II).
Cư
green
Potassium, K
white
UNKNOWN
pink
ABSTRACT: Write a Claim/Evidence/Reasoning paragraph that answers the problem
question: "What is the identity of the unknown ion?" Start with a claim sentence that
directly answers the question. Then provide specific data as evidence that supports your
claim as well as a summary of how you obtained that specific data. Finally, explain in detail
exactly how that evidence proves that your claim is correct. Please make sure that you
answer in complete sentences and in paragraph form.
The identity of the unknown ion is Lithium, Lit. Because, the flame color of an
unknown ion is pink.Each element has its own characteristic emission spectrum.
From the given data, the only ion that gives a pink color on flame test is Lithium.
The principle behind flame test is - when the metal ion is heated, the atoms in it
absorb the energy and gets excited to higher energy levels and when they return
to the original level, emits energy in the form of visible light.
CONCLUSIONS/REFLECTIONS: Please answer the following question in the blue boxx
provided.
四
III
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