An ion is an atom or molecule that has an electric charge. It becomes charged when it gains or loses one or more electrons.
People usually talk about ions in science, especially in chemistry and physics. You may hear about ions in batteries, salt water, or how the body works, because ions help carry electricity and take part in many natural processes.
Meaning & Usage
An ion can be either positive or negative. If it loses electrons, it becomes a positive ion. If it gains electrons, it becomes a negative ion.
Examples
For example, sodium in table salt can form a positive ion, and chlorine can form a negative ion. In everyday life, ions are important in things like electricity, medicine, and sports drinks.
What is an ion in simple words?
An ion is a tiny particle with an electric charge.
Why are ions important?
Ions help carry electricity and are involved in many chemical and biological processes.
Where do we find ions?
You can find ions in salt, water, batteries, and inside living cells.
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