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 particle has almost no mass compared to protons and neutrons?

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

Electrons orbit nucleus due to attraction by:

Electrons are arranged in:

What is the approximate diameter of an atom?

What subatomic particle has a positive charge?

Atomic radius is measured in:

Nuclei are held together by:

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

Neutrons help stabilize the nucleus by:

Which part of the atom makes up the majority of the atomic mass?

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