Podcast
Questions and Answers
What color of flame is produced by Barium Chloride?
What color of flame is produced by Barium Chloride?
What does the presence of different metal salts in fireworks primarily affect?
What does the presence of different metal salts in fireworks primarily affect?
Which metal salt produces a red flame?
Which metal salt produces a red flame?
How does sodium nitrate produce its yellow flame?
How does sodium nitrate produce its yellow flame?
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If potassium chloride were used instead of sodium nitrate, the flame color likely would be?
If potassium chloride were used instead of sodium nitrate, the flame color likely would be?
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Which color has the shortest wavelength according to the information provided?
Which color has the shortest wavelength according to the information provided?
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What is the purpose of using a spectroscope in analyzing emitted light?
What is the purpose of using a spectroscope in analyzing emitted light?
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Which of the following elements produces a blue flame?
Which of the following elements produces a blue flame?
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Which of the following describes the charge and location of protons in an atom?
Which of the following describes the charge and location of protons in an atom?
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Which subatomic particle is responsible for the negative charge of atoms?
Which subatomic particle is responsible for the negative charge of atoms?
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If an atom has 19 protons, how many electrons does it have assuming it is neutral?
If an atom has 19 protons, how many electrons does it have assuming it is neutral?
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What is the charge of neutrons?
What is the charge of neutrons?
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In the context of an atom, which of the following statements is true about electrons?
In the context of an atom, which of the following statements is true about electrons?
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What happens to the arrangement of electrons in an atom when light is emitted, such as from fireworks?
What happens to the arrangement of electrons in an atom when light is emitted, such as from fireworks?
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What does the atomic number of an element represent?
What does the atomic number of an element represent?
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Which of the following elements has an atomic number of 19?
Which of the following elements has an atomic number of 19?
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Which quantum number indicates the main energy level of an electron?
Which quantum number indicates the main energy level of an electron?
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What shape is associated with the p-orbital?
What shape is associated with the p-orbital?
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Which of the following describes the azimuthal quantum number?
Which of the following describes the azimuthal quantum number?
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What is the value of the magnetic quantum number (mℓ) for the d-sublevel?
What is the value of the magnetic quantum number (mℓ) for the d-sublevel?
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Which quantum number can have a value of +½ or -½?
Which quantum number can have a value of +½ or -½?
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What orbital shape is represented by the f orbital?
What orbital shape is represented by the f orbital?
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What determines the subshell of an electron when the secondary quantum number is given?
What determines the subshell of an electron when the secondary quantum number is given?
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For an electron in a p orbital, what are the possible values of the magnetic quantum number?
For an electron in a p orbital, what are the possible values of the magnetic quantum number?
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What must be done to the paper before dropping the ballpen?
What must be done to the paper before dropping the ballpen?
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Which individual has the contact number that begins with '0966'?
Which individual has the contact number that begins with '0966'?
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How many drops of the ballpen need to be completed for the experiment?
How many drops of the ballpen need to be completed for the experiment?
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Which column represents the average distance from the center of the circles?
Which column represents the average distance from the center of the circles?
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What is the contact number of Ma'am Genelyn Almo?
What is the contact number of Ma'am Genelyn Almo?
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Which contact number belongs to Ma'am Sheryll May Rosales?
Which contact number belongs to Ma'am Sheryll May Rosales?
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What calculation needs to be made after counting the dots in each circle?
What calculation needs to be made after counting the dots in each circle?
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Identify the individual with a contact number that ends with '23'.
Identify the individual with a contact number that ends with '23'.
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What should you do with each mark made by the ballpen after recording the results?
What should you do with each mark made by the ballpen after recording the results?
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Which number does not belong to a Ma'am listed?
Which number does not belong to a Ma'am listed?
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What does Column F represent in the data table?
What does Column F represent in the data table?
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What is the area of Circle 1 based on the provided data?
What is the area of Circle 1 based on the provided data?
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What is the purpose of plotting the average distance from the center on the x-axis?
What is the purpose of plotting the average distance from the center on the x-axis?
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What happens to the number of dots per unit area as the distance of the dots goes farther from the center?
What happens to the number of dots per unit area as the distance of the dots goes farther from the center?
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What is the percent probability of finding a dot in a circle with 5 dots in an area of 25.13 cm²?
What is the percent probability of finding a dot in a circle with 5 dots in an area of 25.13 cm²?
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Which distance likely has the highest probability of finding a dot based on the graph presented?
Which distance likely has the highest probability of finding a dot based on the graph presented?
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How many dots are found in the area with the highest probability of finding dots according to the guidelines?
How many dots are found in the area with the highest probability of finding dots according to the guidelines?
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Which electron configuration follows the Pauli Exclusion Principle?
Which electron configuration follows the Pauli Exclusion Principle?
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Which quantum number set is not allowed?
Which quantum number set is not allowed?
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What remains constant for electrons as they move farther from the nucleus?
What remains constant for electrons as they move farther from the nucleus?
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What does the flame test suggest about the structure of an atom?
What does the flame test suggest about the structure of an atom?
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Study Notes
Quantum Mechanical Model of an Atom
- The Rutherford model of the atom, while picturing the atom as mostly empty space with mass concentrated in the nucleus, could not explain the colors of light emitted by heated metals.
- The Quantum Mechanical Model describes the energies and positions of electrons more accurately than the Rutherford model.
- Students are expected to explain how the Quantum Mechanical Model describes the energies and positions of electrons.
- The characteristics of matter are related to how electrons are distributed inside atoms.
Get Refreshed (Elicit)
- The three subatomic particles are protons, neutrons, and electrons.
- Protons have a positive charge, and are located inside the nucleus.
- Neutrons have no charge, and are located inside the nucleus
- Electrons have a negative charge, and are located outside the nucleus.
Get Acquainted (Engage)
- Fireworks use metal salts to produce colors.
- Different metals produce different colors of light when heated.
- The colors emitted by metal salts are due to the arrangement of electrons in their atoms.
Get Informed (Explain)
- Atomic spectra are unique to each element.
- The Bohr model of the atom, while refined Rutherford's model, suggested that electrons orbit the nucleus in specific, fixed energy levels.
- Electrons emit light when they transition between energy levels.
- The Quantum Mechanical Model treats electrons as waves rather than as particles in precise orbits.
- Electrons exist in orbitals, regions of space where the probability of finding an electron is highest.
- Atomic orbitals are organized into energy levels and sublevels.
Quantum numbers
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Quantum numbers describe the properties of electrons in an atom.
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The principal (n) quantum number describes the energy level.
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The angular momentum (l) quantum number defines the shape of the orbital.
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The magnetic (ml) quantum number describes the orientation of the orbital in space.
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The spin (ms) quantum number describes the direction of electron spin.
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Electrons are described in terms of orbitals.
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The quantum mechanical model introduces the concept of orbitals; regions within an atom where there is a high probability of finding an electron.
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Atomic orbitals are assigned labels (spdf).
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Different shapes and orientations of orbitals are associated with different sublevels of energy
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Energy levels can hold a maximum number of electrons.
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Sublevels are organized into principal energy levels. Levels and sublevels are further organized into orbitals.
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A given orbital can hold a maximum of 2 electrons.
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The Pauli exclusion principle dictates that no two electrons in the same atom can have the same set of four quantum numbers (n, l, ml, ms).
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Description
This quiz focuses on the Quantum Mechanical Model of the atom, explaining the roles of protons, neutrons, and electrons. Students will discuss how this model provides a better understanding of electron energies and positions compared to the Rutherford model. Knowledge of how different metals produce color in fireworks is also included.
