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Atomic Structure | Definitions
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Atomic Structure | Definitions
Law of Conservation of Mass
Matter is neither created or destroyed during a chemical reaction.
Atomic Number
The number of protons in the nucleus of one atom on an element.
Allotropes
Allotropes are different physical forms of the same element due to a different arrangement of the atoms of the element.
Atomic Radius
Half the distance between the nuclei of atoms of that element when bonded together by a single covalent bond.
Ground State
The state of an atom when all of its electrons are in their lowest available energy levels.
Orbital
The region of space around the nucleus of an atom in which there is a very high probability of finding an electron.
Relative Atomic Mass (Ar)
Average mass of an atom of an element relative to 1/12th the mass of an atom of Carbon-12.
Mass Spectrometer
An instrument used to calculate the relative atomic mass of an element.
Principle of the Mass Spectrometer
Positively charged ions are separated on the basis of their relative masses when moving in a magnetic field.
Processes of the Mass Spectrometer
Vaporisation, ionisation, acceleration, deflection and detection.
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Law of Conservation of Mass
Matter is neither created or destroyed during a chemical reaction.
Atomic Number
The number of protons in the nucleus of one atom on an element.
Allotropes
Allotropes are different physical forms of the same element due to a different arrangement of the atoms of the element.
Atomic Radius
Half the distance between the nuclei of atoms of that element when bonded together by a single covalent bond.
Ground State
The state of an atom when all of its electrons are in their lowest available energy levels.
Orbital
The region of space around the nucleus of an atom in which there is a very high probability of finding an electron.
Relative Atomic Mass (Ar)
Average mass of an atom of an element relative to 1/12th the mass of an atom of Carbon-12.
Mass Spectrometer
An instrument used to calculate the relative atomic mass of an element.
Principle of the Mass Spectrometer
Positively charged ions are separated on the basis of their relative masses when moving in a magnetic field.
Processes of the Mass Spectrometer
Vaporisation, ionisation, acceleration, deflection and detection.