The Atom Flashcards by Megan Elliott

Q

What is the structure of an atom?

A

Contains a central nucleus containing positive protons and neutral neutrons, orbitted by negative electrons

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Q

What is the mass number?

A

The number of PROTONS + the number of NEUTRONS in the nucleus of an atom

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Q

What is the atomic number?

A

The number of PROTONS in the nucleus of an atom. This also equals the number of ELECTRONS

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Q

How do you work out the number of protons?

A

Look at the atomic number (bottom)

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Q

How do you work out the number of electrons?

A

Look at the atomic number (bottom)

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Q

How do you work out the number of neutrons?

A

Work out the mass number - the atomic number (top-bottom)

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