2.2 Modern Understanding Of The Atom (GCSE Chemistry)

The following is a GCSE Chemistry test covering '2.2 Modern Understanding Of The Atom'

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What subatomic particle has a positive charge?

In a neutral atom, how does the number of electrons compare to the number of protons?

An atom of lithium has 3 protons. How many electrons does a neutral lithium atom have?

Electrons orbit nucleus due to attraction by:

What determines the atomic number of an atom?

What is the relative mass of a neutron?

The electron carries a charge of:

What is an ion?

What does the mass number represent?

How many times smaller is the nucleus compared to the atom?

Subatomic particles are smaller than:

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