Flame Lab
flamelab.jpg

kevin Holliday



Introduction
In this lab we tried to fiqure out what colors the metals had over a flame. When metal are put over a flame they present a color light. Based on the color of the light we were able to tell what metal it was. Red was the lowest visible light, increasing through rainbow until it reaches violet which was the highest energyvisible light. Based on the arrangments of electrons in an atom determines the size of the quantum jump and thus the color that is emitted.

Hypothesis:
If the first element in a formula is the same as another formula than the flame color is going to be similar or the same.

Pre-Lab Questions:
1. The colors in the visible spectrum are Red, orange, Green, Blue, Indigo and Violet.

2. Freqency of a wave is the number of waves that pass a point during a certain time period. Thge Unit is Hertz= 1/S. Wavelenght is the lenght of a wave. Frequnecy is the number of waves in a certain time period, Frequnecy increases and wavelenght decreases.

3. The safety precautions when using a Bunsen Burner are being catious about the flame. Pull back long hair and long jewerly. Wear Goggles and keep a safe distance from the flame.



Materials:
The materials needed in this lab were a bunsen burner and tubing. A striker, a test tube rack with 8 solutons. Finally Nichrome wires.

Procedures:
1. Write Out formulas for all soultions and get teacher initial.
2. Obtain Soultions to be tested.
3. Light Bunsen burner flame.
4. Dip wire in none solution and place it in the edge of the burner flame.
5. Record the color given off by the compound when placed in the flame.
6. Repeat the above steps for the other compounds to be tested.











Results:

Solution
Formla
Metal Ion Present
Color Emitted
Colored Sketch of Flame
Wavelength (m)
Sodium,Chlorine
NaCl
Na+
orange
asdfdsfafasdfasdfasdfasdffdsfasdfad
6.00*10^ -7
Sodium,Nitrogen,Oxygen
NaNO³
Na+
orange
asdfdsfafasdfasdfasdfasdffdsfasdfad
6.30*10^ -7
Potassium,Chlorine
KCl
K+
purple
hasdfhjadslfjkadshfjkashfkljadsfkkdj
4.2*10^ -7
Potassium,Nitrogen,Oxygen
KNO³
K+
purple
hasdfhjadslfjkadshfjkashfkljadsfkkdj
6.3*10 -7
Copper,Sulfate
CuSO⁴
Cu+
green
djfahsdkadgjasdjhgladfsjghdjhjjsdkk
5.5*10 -7
Unkown
Unknown 1
Unknown
yellow
dsfasdfljkhdfjhasdkjfhkldjfkjadhjkha
6.3*10 -7
Barium,Chlorine,
BaCl²
Ba+
blue
fasdhfasdfjkhdasjkjhfhjdfshjdfshjdshj
6*10^ -7
Strontium,chlorine
SrCl²
Sr+
Amber
jh\sdfjkasdjklasdlkasdfjkasdfjsdjlkds
6.65*10^ -7

Copper,Chlorine
CuCl²
Cu+
Green
djfahsdkadgjasdjhgladfsjghdjhjjsdkk
5.5*10^ -7
Unknwn
Unknown 2
Unknown
Yellow
dsfasdfljkhdfjhasdkjfhkldjfkjadhjkha
6.2*10^ -7


Calculations:visible.gif
NaClo: 5*10^14j
KCL: 7,14*10^14j
BaCl2: 5.3*10^14j
SrCL2: 4.51*10^14j
CuCl2: 5.45*10^14

PstLab Questions:
1.Were you able to see differant colors for the metals? Why or why not?
- Yes you were able to see differant colors of the metals because metal burns differantly than transtion metals and metalloids.

2.Wht did you discover?
- I discovered if you put elements togethter and put it in a flame it changes colors.

3.Was the color from the metal or the non-metal? How do you know?
-The color from the metal was dark because metal sends off a low visible light.

4.What particles are found in the chemicals that may bereponsible for the production of colored light?
-The particles that you find these chemicals are atoms and ions.

5. Why do You think the chemicals emit different colors of light?
- They emits different colors becasue they burn different colors.

6. Why do you think the chemicals have to be heated in the flame first before the color is emitted?
- The chemical has to be burned because its atoms have to be burned to get a color.

7. Colorful light emissions are applicable to everyday life. where else have you observed colorful light emisions? Are these light emission appliactions related? Explain Why You Think they are or are not?
- I've observed colorful light emissions watching a fire with inked paper in it.Yes, because its like watching the chemicals mix with the flame.

8. Proposed at least one possible methiod for improving the accuracy of the results in this lab expirment?
- One possible method for improving the accuracy of the results is by holding the formula in the flame longer.

9. A Green line of wave length 486nm is observed in the emission spectrum of hydrogen. Calculate the energy of one photon of this green light?
-

10. I(proved/disproved) myhypothesis. Possible error in this experiment were:
- I proved my hypothesis by putting similar elements in solutions into the flame.