Podcast
Questions and Answers
What is the atomic number defined by?
What is the atomic number defined by?
- Number of protons and electrons
- Number of protons and neutrons
- Number of protons (correct)
- Number of neutrons and electrons
How is the mass number of a single atom calculated?
How is the mass number of a single atom calculated?
- Protons / Neutrons
- Protons - Neutrons
- Protons + Neutrons (correct)
- Protons x Neutrons
Which subatomic particle is essentially without mass?
Which subatomic particle is essentially without mass?
- Protons
- Electrons (correct)
- Neutrons
- Positrons
What is the common factor among all atoms of the same element?
What is the common factor among all atoms of the same element?
How are protons and electrons distinguished in terms of charge?
How are protons and electrons distinguished in terms of charge?
What is the charge of a neutron?
What is the charge of a neutron?
How can one determine the atomic number of an element?
How can one determine the atomic number of an element?
What is the relationship between isotopes and mass numbers?
What is the relationship between isotopes and mass numbers?
How is the mass number of an atom calculated?
How is the mass number of an atom calculated?
Which element has 14 protons and 15 neutrons in a specific isotope?
Which element has 14 protons and 15 neutrons in a specific isotope?
What does the mass number of an element represent?
What does the mass number of an element represent?
How can one calculate the number of neutrons in an atom if given the atomic and mass numbers?
How can one calculate the number of neutrons in an atom if given the atomic and mass numbers?
Which statement is true about atomic and mass numbers?
Which statement is true about atomic and mass numbers?
What is the relationship between atomic and mass numbers?
What is the relationship between atomic and mass numbers?
What distinguishes atomic number from mass number in terms of elements?
What distinguishes atomic number from mass number in terms of elements?
Flashcards
Atomic Number Definition
Atomic Number Definition
The number of protons in the nucleus of an atom.
Mass Number Calculation
Mass Number Calculation
The sum of protons and neutrons in an atom's nucleus.
Subatomic Particle without Mass
Subatomic Particle without Mass
Electrons are the subatomic particles with negligible mass.
Common Factor Among Atoms of the Same Element
Common Factor Among Atoms of the Same Element
All atoms of the same element share the same atomic number.
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Proton and Electron Charge
Proton and Electron Charge
Protons have a +1 charge, while electrons have a -1 charge.
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Neutron Charge
Neutron Charge
Neutrons have a charge of 0.
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Determining Atomic Number
Determining Atomic Number
The atomic number of an element can be found on the periodic table.
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Isotopes and Mass Numbers
Isotopes and Mass Numbers
Isotopes of the same element have different numbers of neutrons, leading to different mass numbers.
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Mass Number Formula
Mass Number Formula
Mass Number (A) = Number of Protons + Number of Neutrons
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Element with 14 Protons and 15 Neutrons
Element with 14 Protons and 15 Neutrons
Having 14 protons and 15 neutrons is an isotope of Silicon.
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Mass Number Representation
Mass Number Representation
The mass number represents the total number of protons and neutrons in an atom's nucleus.
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Calculate Number of Neutrons
Calculate Number of Neutrons
Number of Neutrons = Mass Number - Atomic Number
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Atomic vs. Mass Numbers
Atomic vs. Mass Numbers
Atomic numbers are unique, while mass numbers vary.
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Relationship Between Atomic and Mass Numbers
Relationship Between Atomic and Mass Numbers
Atomic number is the number of protons, mass number is protons plus neutrons
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Atomic Number vs Mass Number
Atomic Number vs Mass Number
Atomic number defines the element; mass number needs separate determination.
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