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 →

2) A neutron has no electric charge — it is neutral, neither positive nor negative. tree →

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 →
• A neutron has no charge. tree →
• Protons and neutrons are packed together in the nucleus. tree →
• A neutron star is smaller than a city but heavier than the Sun. tree →
• Most hydrogen atoms have no neutrons at all. tree →
• Neutrons help split atoms in a nuclear power station. tree →

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.

Trees and pragmatics

Every meaning and example of «neutron» parsed by Mova, each sentence with its dependency tree and frames.