Ion formation
What Ion formation means in Combined Science GCSE, as defined for AQA.
Definitions of Ion formation
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Reference: AQA
Atoms turn into positive ions if they lose one or more outer electron(s), so the number of protons exceeds the number of electrons and the overall charge becomes positive.
The process in which a metal atom loses one or more electrons to form a positive ion, which happens readily in reactive metals and only with difficulty in unreactive ones.
Topics that use Ion formation
- Mass number, atomic number and isotopes (AQA GCSE)
- The reactivity series (AQA GCSE)
Related terms
- Atomic number
- Atomic structure
- Electron arrangement and outer electrons
- Experimental comparison
- Experimental observation of metal reactions
- Isotopes
- Mass number
- Nuclide notation
Using Ion formation in the exam
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