Scientific Theory of Atoms

Front

A state of matter with no definite shape or volume.

Back

gas

Front

A state of matter that has no definite shape but has a definite volume.

Back

liquid

Front

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

Back

electron

Front

A state of matter that has a definite shape and a definite volume.

Back

solid

Front

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

Back

isotope

Front

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

Back

nucleus

Front

The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element.

Back

atom

Front

A substance that contains one kind of atom and cannot be broken down into a simpler form.

Back

element

Front

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

Back

proton

Front

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

Back

neutron