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# neutron

«neutron» in Mova's school dictionary: **one of the tiny particles inside the centre (nucleus) of…** — its meaning for a pupil, its sense in the lessons and examples, with 1 sentence of Mova's corpora that use it.

### part of speech

noun (a neutron, neutrons)

### meaning for a pupil

1) A neutron is one of the tiny particles inside the centre (nucleus) of an atom. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#m1)

2) A neutron has no electric charge — it is neutral, neither positive nor negative. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#m2)

### sense in the lessons

In science lessons, the atom is made of protons (positive), neutrons (no charge) and electrons (negative); protons and neutrons sit in the nucleus, electrons move around it. Neutrons are important in nuclear power stations, where they split atoms. A neutron star is what is left after some huge stars explode: very small and very heavy. Phrases: «protons and neutrons», «neutron star», «number of neutrons».

### examples

- An atom has protons, neutrons and electrons. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#x1)
- A neutron has no charge. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#x2)
- Protons and neutrons are packed together in the nucleus. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#x3)
- A neutron star is smaller than a city but heavier than the Sun. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#x4)
- Most hydrogen atoms have no neutrons at all. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#x5)
- Neutrons help split atoms in a nuclear power station. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/#x6)

### note

Easy way to remember: Neutron = Neutral. A proton and a neutron weigh about the same; an electron is much lighter. Maths: number of neutrons = mass number − number of protons. Do not confuse with «neuron», a nerve cell in the brain.

### In the corpora

- [An atom is made of smaller parts: protons and neutrons in a tiny middle called the nucleus, and electrons around it.](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/1-what-is-everything-made-of/13/)

### Trees and pragmatics

[Every meaning and example of «neutron» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/N/neutron/), each sentence with its dependency tree and frames.