![Flame Tests<br />SSS:<br />SC.A.2.4.6 The student understands that matter may act as a wave, a particle, or something else entirely different with its own characteristic behavior. <br />SC.B.1.4.4.-The student knows that as electrical charges oscillate they create time-varying electric and magnetic fields that propagate away from the source as an electro-magnetic wave.<br />Background:<br />Flame tests provide a way to test for the presence of specific metallic ions. The heat of the flame excites the loosely-held electrons in the metal ion prompting the electrons to jump from a ground level to a higher energy level in the atom. As the electrons fall back to their ground state, energy is released from the excited electrons and can be seen as a colored flame. The color is a combination of the wavelengths of each transition and can be used to determine the identity of an unknown ion. Although white light produces a continuous spectrum in which all wavelengths of visible light are present (400-700nm), an excited electron produces one or more specific lines in the spectrum. This unique spectrum corresponds to an element’s distinct electron configuration. <br />Purpose of Lab/Activity: <br />Observe the spectra emitted by different ions.<br />,[object Object],Safety: <br />,[object Object]](https://image.slidesharecdn.com/flametests-101130132717-phpapp02/85/Flame-tests-1-320.jpg)
Recomendados
Más contenido relacionado
La actualidad más candente
La actualidad más candente (20)
Destacado
Destacado (11)
Similar a Flame tests
Similar a Flame tests (20)
Más de Esther Herrera
Más de Esther Herrera (20)
Último
Último (20)
Flame tests
- 2. Tie back hair and secure loose bulky clothing while working near a flame.
- 3. All of the salt solutions (except NaCl) are toxic, if any of the solutions splash on your skin, wash affected area with large amounts of water and notify your teacher.
- 4. Handle carefully the heated nichrome wire. Make sure to hold only from the handle.
- 6. lab apron
- 9. wash bottle with distilled water
- 10. well plate
- 11. hydrochloric acid (HCl) 6.0 M in a dropper bottle
- 12. solutions of metallic salts:
- 20. Calculate the frequency of the wave.
- 21. Calculate the energy of a photon with this wavelength.How is spectrometry used to determine the composition of stars? <br />