Color of Salts (Flame Test)
Summary
This laboratory exercise is designed to introduce students to salts and their unique color given off while burned. Students will obtain several salt solutions to observe the color of flame when burned. It also engages the students in a lab exercise for hands-on learners. This lab can also be used as a reminder of safety procedures during experiments.
CollapseLearning Goals
Goals
1. Students will review basic skills and safety procedures within a lab setting.
2. Students will observe similarities and differences of elements from the periodic table and what colors are emitted.
3. Students will be allowed to see various wavelengths of light to provide a better understanding of the visible light spectrum.
Concepts:
Students will observe visible light colors of the light spectrum.
This lab would be an introduction to the emission of photons.
Vocabulary:
Wavelength
Frequency
Amplitude
Visible light spectrum
Atomic Spectra
Photon
1. Students will review basic skills and safety procedures within a lab setting.
2. Students will observe similarities and differences of elements from the periodic table and what colors are emitted.
3. Students will be allowed to see various wavelengths of light to provide a better understanding of the visible light spectrum.
Concepts:
Students will observe visible light colors of the light spectrum.
This lab would be an introduction to the emission of photons.
Vocabulary:
Wavelength
Frequency
Amplitude
Visible light spectrum
Atomic Spectra
Photon
Context for Use
This laboratory exercise can be performed in any high school class with a variety of class sizes and group numbers. The lab can be performed within a 50 minute class period. Any special equipment can be found in the attached document; however any basic chemistry class should have all the needed supplies.
Students should have mastered basic safety procedures within the class room before attempting this lab.
This exercise can easily be introduced during a basic chemistry class when discussing the light spectrum.
Students should have mastered basic safety procedures within the class room before attempting this lab.
This exercise can easily be introduced during a basic chemistry class when discussing the light spectrum.
Description and Teaching Materials
Mechanics and materials can be viewed in the attached document.
This lab will be introduced during the discussion on light spectrum.
A wrap up discussion will be used as a closure to the lab and answer any questions about the information prior to the lab and during.
This lab has been modified from
Wilbraham A. et al. 2005. Prentice Hall Chemistry. Pearson Prentice Hall, Upper Saddle River, New Jersey. pg 142. Flame Test Lab (Microsoft Word 26kB Aug3 09)
This lab will be introduced during the discussion on light spectrum.
A wrap up discussion will be used as a closure to the lab and answer any questions about the information prior to the lab and during.
This lab has been modified from
Wilbraham A. et al. 2005. Prentice Hall Chemistry. Pearson Prentice Hall, Upper Saddle River, New Jersey. pg 142. Flame Test Lab (Microsoft Word 26kB Aug3 09)
Teaching Notes and Tips
Safety: chemicals and flames are used. Students must use caution.
Assessment
Assessment is done through the assigned questions at the end of the procedure as well as the wrap up discussion questions that will be asked.
Students will be given a laboratory grade as well as their answers to the questions they will hand in.
Students will be given a laboratory grade as well as their answers to the questions they will hand in.
Standards
substrand 1. Matter. Standard 1 the structure of the atom determines chemical properties of elements. Code. 9.2.1.1.3.
Also 3. Interactions among science, technology, engineering, mathematics, and society. standard 4. STEM rely on each other to enhance knowledge and understanding. Code 9.1.3.4.4.
Also 3. Interactions among science, technology, engineering, mathematics, and society. standard 4. STEM rely on each other to enhance knowledge and understanding. Code 9.1.3.4.4.