Flame Test Lab Report

When a beam of sunlight passes through a specially shaped glass object called a prism, the rays of different wavelengths are bent at different angles. The bending breaks up the sunlight into a beautiful band of colors. This band contains all the colors of the rainbow and is called the visible spectrum. At one end of the spectrum, the light appears as violet. It consists of the shortest wavelengths of light that we can see. Farther along the spectrum, the light has increasingly longer wavelengths. It appears as blue, green, yellow, orange, and red, each shading into its neighboring colors in the spectrum. The longest wavelengths of light that we can see appear deep red in color. Some descriptions of the spectrum also mention the color indigo, which is closely related to blue, between violet and blue.

In doing so, the identity of the unknown solutions was determined through comparing the colors of the unknown to that of the known, which were dependent on the varying energy transitions the electrons went through. Therefore, the purpose of the experiment was successfully achieved. Since LiNO3 and Sr(NO3)2 were red/red orange in color, it was determined that lithium ions and strontium ions have the least amount of energy due to the fact that red has the longest wavelength in the spectrum, and colors with longer wavelengths have lower energies. The energy of each the other metallic ions increased in accordance with the energy of the wavelength emitted from that color based on the color spectrum. Potassium had the highest energy emitted, since violet is at the opposite end of the spectrum and has the shortest wavelength and highest

The wavelength of the light should be a different color from the solution’s color. This is because if the color of the wavelength of the light is the same color as the solution’s color, then the color would not be absorbed. The only way that a solution can absorb a color is if the color of the light’s wavelength is its complementary (opposite) color. The color of the light chosen for this experiment was blue because the wavelength was set to 430nm, which corresponds to blue's wavelength. The color of the FeSCN2+ complex ion is blood-red.

This light is known as the spectrum emission color of an element which can also be used to identify an element as well as determine the energy that is given off. In this lab we used this information to identify three unknown substances and determine if the energy given off was high or low. In order to conduct this lab we had to take a known substance for example Copper Chloride (CuCl) and use a splint to put the substance over a bunsen burner. We then recorded the frequency, color of the flame, and the spectrum emission line by using spectroscopes, which diffracts light.

This calibration curve then created an equation that allowed for the unknown concentration of the FeSCN2+ ions to be determined.

1- Different elements give off different colors when heated because electrons go farther the nucleus, or to an upper energy level, and once they go back to their original orbit (energy level), they release colors because of the amount of energy released. This also happens because different elements are in different orbits and they hit different orbits as well.

Unknown Mixture was SrCI2 and CuCI2 because looking at the different flames of all the salt solutions the two flames that had the same colors as the unknown mixture did. The color of a vibrant red was from the SrCI2 and the Green blue colors came from the CuCI2. Since the

The diffraction grating was used to measure the angle values of different light colors using a collimator. The wavelength of each light beam according to the corresponding color was then calculated using the specific angle value. In this procedure, a telescope was used to form an image from the diffracted light from the transmission grating. A mercury light source was also used as a light ray source of

Once a light beam shines through the flame, the atoms absorb some of the light. It is then detected, recorded and compared to a series of standard solutions. In the absorption spectrum, the absorbed light show up as black gaps. These distinctive gaps indicate the difference in energy levels for a particular element. If this can be compared to the concentration of its standard solution, then it can form a calibration curve.

to compare the results, and neither solution was expected to produce an observable chemical reaction. The procedure was the same as used for the test with 6M HNO3 and 0.1M AgNO3 solution and the test with 6M HCl and 0.1M BaCl2 solution. A third experiment used was the flame test. First, a scoopula was used to place 0.1 grams of the unknown compound in a test tube, and a wash bottle was used to add approximately 2 mL of deionized water to create a solution.

2. What color of light is the highest in energy? Violet has the highest energy because it has the shortest wavelength and the highest frequency making it the one color with the highest energy. We can conclude that potassium chloride has the highest energy 3. How are electrons "excited"?

Numerous metals and different substances radiate splendid shades of obvious light when they are warmed. The colors originate from electrons moving between energy levels. The energy gaps between their electron shells relate with the energy of the colour they give off. so the energy of every colour of light matches the energy gaps between electron shells in different atoms. Electrons are orchestrated into energy levels.

The light is listed on the visible spectrum. The visible spectrum is made up of violet. Indigo, blue, green, yellow, orange, and red. The spectrum goes in order from 380 mm to 680 mm. It gets higher when you go to the right and smaller when you go to the left.

With today’s science, light becomes more specifically perceived as a spectrum. The specific name for this spectrum is the electromagnetic spectrum, which contains many types of waves (NASA, Electromagnetic Spectrum). In Figure 2, the spectrum shows a variety of wavelengths with specific wavelengths classified by its length. The range of wavelengths humans can see wavelengths that are around 400 – 700 nanometers (nm) as colors while all other electromagnetic waves are simply blind to humans. The interesting classes for light that are used to measure are microwave and infrared light. The laser is

The main two types of photoreceptors are called rods and cones. Rod do not play a role in color vision and are only active in dim light which is why you can’t see colors at night. Cones, on the other hand, are sensitive to bright light and provide most of our daytime vision in a wide range of spectacular colors. There are three types of cone cells; red, green, and blue and each correspond to different wavelengths of light: red has long wavelengths, green has medium, and blue has short wavelengths. So, what the heck are wavelengths and what do they have to do with color? Well, light itself is energy that travels in waves. Just as sound is a wave that vibrates in the air, light is a wave that vibrates in an electromagnetic field. The frequency of a wave is just the number of waves or humps that pass through a given point in a second and the wavelength is the distance between the tops of those humps. So a red light wave would look something like this, and a blue like this, and then green would be somewhere in the middle there. So the colors we see are dependent upon the frequency of the light waves.