C1 1.2

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What is in the middle of an atom?
A nucleus.
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Which two types of particles does the nucleus contain?
Protons and Neutrons.
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Which third type of particle orbits the nucleus?
Electron.
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Any atom has the same number of electrons orbiting its nucleus as it has...
...Protons in the nucleus.
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What is the relative charge of a proton?
+1
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What is the relative charge of a neutron?
0
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What is the relative charge of an electron?
-1
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Why do the positive charges of a proton and the negative charges of an electron cancel out?
Because atoms have the same number of protons and electrons.
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If a carbon atom has 6 protons, how many electrons does it have?
6.
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What is an atomic number?
The amount of protons in the nucleus of an atom.
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What is the atomic number of Beryllium?
4.
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What is the atomic number of Aluminium?
13.
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What is the atomic number of Oxygen?
8.
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What is the atomic number of Carbon?
6.
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What is the atomic number of Silicon?
14.
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What is the mass number?
The number of protons plus neutrons.
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If an atom has 4 protons and 5 neutrons, what will it's mass number be?
9.
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Argon has a mass number of 40 and an atomic number of 18, how many neutrons does it have?
22.
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What is the equation for number of neutrons?
Number of Neutrons = Mass number - Atomic Number
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Other cards in this set

Card 2

Front

Which two types of particles does the nucleus contain?

Back

Protons and Neutrons.

Card 3

Front

Which third type of particle orbits the nucleus?

Back

Preview of the front of card 3

Card 4

Front

Any atom has the same number of electrons orbiting its nucleus as it has...

Back

Preview of the front of card 4

Card 5

Front

What is the relative charge of a proton?

Back

Preview of the front of card 5
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