Atom structure

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What does an atom consist of?
A nucleus containing protons and neutrons surrounded by electrons
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What is the overall charge of an atom?
Atoms have no overall charge. This is because, electrons are negatively charged and protons are positively charged, so cancel each other out. Neutrons do no have a charge.
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What happens if some electrons are added or removed from an atom?
The atom becomes charged and is then an ion.
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What is the atomic number?
The number of protons.
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What is the atomic mass number?
The total number of neutrons and protons in the atom.
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What overall charge does the nucleus of an atom have?
It has a positive charge overall because of the protons.
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What are the symbols for: calcium, carbon and sodium.
Calcium- Ca. Carbon- C . Sodium- Na.
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What is the correct electronic structure for an atom with 17 electrons?
2,8,7
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What are groups in the periodic table?
A column of similar elements.
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Card 2

Front

What is the overall charge of an atom?

Back

Atoms have no overall charge. This is because, electrons are negatively charged and protons are positively charged, so cancel each other out. Neutrons do no have a charge.

Card 3

Front

What happens if some electrons are added or removed from an atom?

Back

Preview of the front of card 3

Card 4

Front

What is the atomic number?

Back

Preview of the front of card 4

Card 5

Front

What is the atomic mass number?

Back

Preview of the front of card 5
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