January 22 2014
Name of Salt
Colour of Flame
Copper (II) Chloride
1. In table 1 after dipping the nichrome wire loop in the sample salt and putting it into the flame, the flame would turn into a different colour. You can determine identity of the unknowns by looking at their spectrum using a spectroscope and distinguish the characteristic through the spectral lines.
3. In table 3, the differences between the spectra of different light sources is the that some light sources show specific colours the shades of colours can differ and the spacing of the spectra is particular, for example some of the spacing can be close together or it can be far apart.
4. Possible experimental error is that the equipment we were could not give a 100% reading if it was not thoroughly clean. The nichrome wire loop especially could have been contaminated with another station's sample salt. Another error could that the sample salt could be contaminated with another salt if the nichrome wire loop was mixed with another salt and it could cross contaminate.
1. A coloured band is produced when atom gets excited to a high energy level and is returned to its original state.
2. Cation causes the electrons to become excited and they start to jump to higher energy levels since the flame is providing the heat energy then the electrons start to fall back into its original state and the energy is released in the form of light which is why the flame produces colour.
3. The spectroscope...