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AQA GCSE Additional Chemistry > The Atom > Flashcards

Flashcards in The Atom Deck (6)
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1
Q

What is the structure of an atom?

A

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

2
Q

What is the mass number?

A

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

3
Q

What is the atomic number?

A

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

4
Q

How do you work out the number of protons?

A

Look at the atomic number (bottom)

5
Q

How do you work out the number of electrons?

A

Look at the atomic number (bottom)

6
Q

How do you work out the number of neutrons?

A

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