Atomic Structure - unit 1

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  • Created by: Emily
  • Created on: 14-02-14 11:15
What is the relative mass and relative charge of a Proton?
Relative mass = 1 Relative charge = +1
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What is the relative mass and relative charge of a Neutron?
Relative mass = 1 Relative charge = 0
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What is the relative mass and relative charge of an Electron?
Relative mass = 1/1840 Relative charge = -1
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What particles are found in the nucleus and what can these be called?
Protons and Neutrons are found in the nucleus, and can sometimes be called nucleons.
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What is the definition of the Atomic number?
Atomic number = number of protons
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What is the definition of the Mass number?
Mass number = number of protons + number of neutrons.
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What are isotopes?
Atoms with the same number of protons but different numbers of neutrons.
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What is the Relative atomic mass?
Ar=average mass of an atom÷1/12th mass of 1 atom of ¹²C
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What is the Relative formula mass?
Mr=average mass of an entity÷1/12th mass of 1 atom of ¹²C
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What is the Relative molecular mass?
Mr=average mass of a molecule÷1/12th mass of 1 atom of ¹²C
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What are the four key stages to the mass spectrometer?
1) ionisation, 2) acceleration, 3) deflection, 4) detection.
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What is the definition of ionisation energy?
The energy required to remove a mole of electrons from a mole of atoms in the gaseous state.
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Card 2

Front

What is the relative mass and relative charge of a Neutron?

Back

Relative mass = 1 Relative charge = 0

Card 3

Front

What is the relative mass and relative charge of an Electron?

Back

Preview of the front of card 3

Card 4

Front

What particles are found in the nucleus and what can these be called?

Back

Preview of the front of card 4

Card 5

Front

What is the definition of the Atomic number?

Back

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