3.1.1 Fundamental particles

What is an atom

The smalled parts of an element that can take place in chemical reactions

What is an atom mostly made up of

Empty space

What is in the centre of the atom

A small dense nucleus containing protons and neutrons

What charge does the nucleus have

Positive

What are the three subatomic particles

Protons Neutrons and electrons

What is the relative charge of a proton

+1

What is the relative charge of a neutron

0

What is the relative charge of an electron

-1

What is the relative mass of a proton

1

What is the relative mass of a neutron

1

What is the relative mass of an electron

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