What information does a flame test provide?A.The quantum numbers of electronsB.The emission spectrum of an elementC.The temperature that causes emissionsD.The absorption spectrum of an element
Question
What information does a flame test provide?A.The quantum numbers of electronsB.The emission spectrum of an elementC.The temperature that causes emissionsD.The absorption spectrum of an element
Solution
A flame test provides the emission spectrum of an element. This is because when an element is heated, its electrons get excited and jump to a higher energy level. When they fall back to their original energy level, they emit light of a specific color. This color corresponds to a specific wavelength of light, which is unique to that element. Therefore, by observing the color of the flame, we can identify the element. This is essentially what the emission spectrum of an element is.
Similar Questions
1. What was the purpose of testing the known compounds?1 pointThe purpose of testing the known compounds was to observe the substance's atomic emission spectrum.The purpose of testing the known compounds was to determine the characteristic flame color of each of the substancesThe purpose of testing the known compounds was to predict the identity of the unknown compoundsThe purpose of testing the known compounds was to determine exactly how much of each element the substance contained
What is an advantage of using an instrumental method rather than a chemical test to analyse a substance?Requires special trainingMore expensiveMore accurateRequires comparison with known data2What is flame emission spectroscopy used to analyse?GasesNon-metal ionsMetal ionsMetal and non-metal ions3In flame emission spectroscopy, each metal ion absorbs and gives out its own characteristic pattern of radiation. What is this called?Line spectrumColour spectrumChromatogramRadiation pattern4Which of the following is a use for flame emission spectroscopy?To discover new elementsAll of theseTo control the amounts of trace metals in alloys such as steelTo detect toxic metal ions in drinking water
What information about the structure of a hydrogen atom can be gained from its emission spectrum?A. Most of the mass of the atom is in its nucleus.B. A hydrogen atom contains one proton and one electron.C. The electron in the hydrogen atom is held near the nucleus.D. The electron may exist in any of several energy levels
Determine what information about the structure of a helium atom can be gained from its emission spectrum.
For atomic emission spectroscopy and atomic absorption spectroscopy, which one is more sensitiveto flame instability and why
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