atomic spectra

What are spectral lines?

• Dark or bright lines in a spectrum that correspond to specific wavelengths of light emitted or absorbed by an atom or molecule.

• Lines that indicate the density of a liquid

• Lines that indicate the pressure of a gas

• Lines that indicate the temperature of a star

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What is emission spectra?

• The emission spectra is the unique pattern of light emitted by an atom or molecule when it transitions from a higher energy state to a lower energy state.

• The emission spectra is the process of converting light energy into heat energy by an atom or molecule.

• The emission spectra is the unique pattern of light emitted by an atom or molecule when it transitions from a lower energy state to a higher energy state.

• The emission spectra is the absorption of light by an atom or molecule when it transitions from a higher energy state to a lower energy state.

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What is the purpose of flame tests in atomic emission?

• The purpose of flame tests in atomic emission is to create a chemical reaction between the sample and the flame.

• The purpose of flame tests in atomic emission is to identify the presence of specific elements in a sample based on the colour of the flame produced when the sample is heated.

• The purpose of flame tests in atomic emission is to determine the pH level of the sample based on the colour of the flame produced.

• The purpose of flame tests in atomic emission is to measure the temperature of the flame produced when the sample is heated.

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How are spectral lines formed?

• Atoms or molecules absorb or emit light at specific wavelengths.

• Spectral lines are formed by the reflection of light off of objects.

• Spectral lines are formed by the refraction of light through a prism.

• Spectral lines are formed by the interference of light waves.

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What is the relationship between spectral lines and energy levels?

• Spectral lines are produced when photons transition between different energy levels in an atom.

• Spectral lines are produced when neutrons transition between different energy levels in an atom.

• Spectral lines are produced when electrons transition between different energy levels in an atom.

• Spectral lines are produced when protons transition between different energy levels in an atom.

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How can flame tests be used to identify elements?

• By observing the color of the flame produced when the element is heated.

• By analyzing the sound produced when the element is heated.

• By measuring the temperature of the flame produced.

• By observing the texture of the flame produced when the element is heated.

What is the principle behind flame tests?

• Different elements emit different colours of light when heated in a flame.

• Flame tests are used to measure the amount of oxygen in a flame.

• Flame tests are used to create fire.

• Flame tests are used to determine the temperature of a flame.

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What factors affect the color of the flame in flame tests?

• Type of fuel used

• Time of day when the test is conducted

• Temperature of the flame

• Presence of specific elements or compounds

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Why is atomic emission spectroscopy important in analytical chemistry?

• Atomic emission spectroscopy is not important in analytical chemistry.

• Atomic emission spectroscopy is important in analytical chemistry because it allows for the identification and quantification of elements in a sample.

• Atomic emission spectroscopy is only important for qualitative analysis, not quantitative analysis.

• Atomic emission spectroscopy is only important for organic chemistry, not inorganic chemistry.

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The _______________ determines the color of visible light. 

• wavelength
• speed
• amplitude
• light

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