Atoms
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22 Terms
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Atoms radius size
0.1 nanometres
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Atoms radius size in standard form
1 x 10(-10)m
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Nucleus description
In the middle of the atom and contains protons and neutrons
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Nucleus radius size
0.01 picometres
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Nucleus radius size standard form
1 x 10(-14)
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Why does mass number tell you
How many protons and neutrons there are
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What does atomic number tell you
How many protons there are
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What does the nuclear symbol tell you
Its atomic number and mass number
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What is an ion
An atom or group of atoms that has lost or gained electrons
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Why are atoms neutral
Because they have the same amount of protons and electrons
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Atoms overall charge
Neutral(0)
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Charge of electrons
-1
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Charge of neutrons
0
14
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Charge of protons
+1
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Relative mass of electrons
Very small, often 0
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Relative mass of neutrons
1
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Relative mass of protons
1
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What does electron volume determine
The volume of their orbits determines the size of the atom
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Electron charge
Negatively charged and tiny, but cover a lot of space
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Electrons description
Move around the nucleus in electron shells
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Where is the mass in the nucleus
Almost all of it is concentrated in the nucleus
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Nucleus charge
It has a positive charge