Science- Topic 4 Atoms

A small positively charged particle that is found in the nucleus of an atom.

 An atom with the same number of protons and a different number of neutrons from other atoms of the same element.

well-supported explanation for something observed in the natural world, based on evidence

A small particle in a nucleus of an atom, with no electrical charge.

The number of protons in the nucleus of an atom.

A tiny, negatively - charged particle that moves around the outside of the nucleus of an atom.

The sum of protons and neutrons in the nucleus of an atom.

something that explains some aspect of nature

the smallest particle of an element that has the properties of that element

The central core of an atom, which contains protons and neutrons