Claim:The data does support the hypothesis that each chemical compound has a unique and identifiable color.
Method:
In the lab each element that was given to the group caused a different chemical reaction when it was mixed with the flame, the reaction that occurred caused the spectrum of the flame to change, resulting in the change of color of the flame. the colors ranged from hot pink to bright green. Although each different element caused a different reaction, some of the flames ended up being similar but different colors. Each different flame had a different spectrum of colors that created the color that are visible to the human eye. This unique spectrum is visible by A spectroscope "an apparatus for producing and recording spectra for examination".
In the beginning of the lab the spectroscope allowed the group to see the original spectrum of the flame, which consisted of blue and green. As the first chemical, was put into the flame a bright orange appeared, causing the spectroscope to light up with a stunning red and yellow. It wasn't long before the group started to see what seemed like a million different color not one alike.
Evidence:
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SrCL2 and NaCL on the other hand had similar colors such as bright orange and dark orange, but very different spectrums. The same thing has been found with LicL and KCL, but those Certain two chemical compounds have similar spectrums and color. Based on the knowledge from the web quest the group made an inference that the 1st mystery compound was CacL2, because it had the same unique colors as the first chemical compound did. The same thing could be said for the 2nd mystery chemical compound and KCL seeing in how they were both
The purpose of the Unknown White Compound Lab was to identify the unknown compound by performing several experiments. Conducting a solubility test, flame test, pH paper test, ion test, pH probe test, conductivity probe test, and synthesizing the compound will accurately identified the unknown compound. In order to narrow down the possible compounds, the solubility test was used to determine that the compound was soluble in water. Next, the flame test was used to compare the unknown compound to other known compounds such as potassium chloride, sodium chloride, and calcium carbonate. The flame test concluded that the cation in the unknown compound was potassium. Following, pH paper was used to determine the compound to be neutral and slightly
Hypothesis: If the mystery powder is compared with the five known compounds, the mystery powder should match the one with the same physical and chemical properties. Also their reaction with water, universal indicator, vinegar and Iodine solution should match if an accurate experiment is conducted.
The purpose of conducting experiment was to determine the identity of white compound. Based on the 5 gram of unknown white compound several experiment conducted including solubility test, pH test, flame test, and ion test. Several materials including chemicals used throughout experiment and will be described through paragraphs.
In Lavoisier’s Memoir in Combustion in General, the author emphasizes the importance of organizing experimental data to form new theories. Specifically, he encourages hypothesis testing and trial-and-error to better understand the laws of nature. Lavoisier apply these principles to his own theory by outlining the observations from combustion and calcification, and by hypothesizing the properities of “pure air” and “the matter of fire”.
This smoke bomb lab helped me understand chemical bonding and reactions by starting from the very beginning with mixing the nitrate, sugar, and melted crayon. Mixing them formed a texture almost like powdery peanut butter with some liquid which was actually pretty interesting. The second chemical bonding I seen was that, once putting the solution in the tin-can and it started solidifying due to all the stuff we mixed together. It didn’t take long at all for it to start forming into a solid. When we went outside and lit the wick on fire showed the main chemical reaction throughout the whole experiment. The nitrate reacting with the lighted wick started a big fire in one of the groups cans but some of the other groups bombs didn’t get to light like it was supposed to and the wick just burned out. I was one of the groups whose bombs didn’t work properly. I think it’s because we didn’t put the wick in deep enough to our solution so when we lit it the fire just burned out before going into the solution.
has a very prominent ‘black’ and ‘white’ side but also contains traces of each in the
After five the test tube was removed and cooled to room temperature. Three more test tubes were obtained and labeled 1, 2, and 3. The correct reagent was added to each test tube as seen. The spectrophotometer was adjusted
If a substance has color, then you can determine its concentration by light absorption which is when light is being taken up by an object or spectrum. The Beer-Lambert Law is commonly used to find the absorbance (A) of light in a solution by multiplying the molar absorption coefficient ( ε ) ( how well a chemical absorbs light at a given wavelength ), the concentration ( C ) and the path of the light through the sample solution ( l ). The equation for this relationship is “ A=εCl ”. The color of the solution is determined by the color of light the molecules do not absorb, so, say if you had a blue colored solution, then the color of light will be orange. This is because the highest molar absorption coefficient for blue dye falls around 620 nanometer which is the orange part of the visible electromagnetic spectrum.
When shown a colour spectrum besides blue and purple, Dalton was only able to recognise one other colour, yellow. Or as he says?that part of the image which others call red appears to me little more than a shade or deflect of light. After that the orange, yellow and green seem one colour which descends pretty uniformly from an intense to a rare yellow, making what I should call different shades of yellow. In 1801 he argued that the atmosphere was filled with mechanical gases and that the chemical reactions between the nitrogen and oxygen played no part in the atmosphere?s construction. To prove this, he conducted a lot of experiments on the solubility of gases in water.
Identifying Five Unknown Chemicals I was given 5 unknown samples, which are sodium chloride, sodium thiosulfate, calcium carbonate, sodium bicarbonate and sodium nitrate and these samples are all white and solid. However, I don’t know which substance is which sample and I was only given some information about the physical and chemical properties of these substances. In order to identify the 5 unknown samples, knowing which sample is which substance, I have to carry out this experiment, finding out the chemical and physical properties of these samples. How can we identify five unknown chemical samples that seem to look the same?
There are hundreds of flames retardants and they are usually categorized according to their chemical composition. Their chemical composition affects their physical properties such as their color and smell, and their chemical properties
Hue is the common name for the colours in the spectrum which are red, orange, yellow, green, blue, and violet. A pigment is a colouring ag...
...sen burner, the oxygen gives more energy to the electrons in the flame, causing the flame to heat up more and more. Therefore, the chemical reaction of methane gas reacting with oxygen to produce carbon dioxide and water vapor is given off by the Bunsen burner. We can now understand that the yellow flame contains heat as a cause of the oxygen that was a part of the reaction, but to make the flame hotter, the percentage of oxygen being fed to the Bunsen burner must increase.
An observer would see a series of different reactions if a chemical reaction was taking place. The first being is the substance a precipitate. Did a gas form from the mixing of the two substances. Is the color changing in any way. Was heat produced or absorbed from the reaction. Finally did the two substances product a new substance which is what the chemical reaction does.
Based on your experiments what is the formula of the colorless gas that is released when heating the malachite?