Vocabulary #6

Element:  A basic building block of matter; a pure substance that cannot be broken down into anything simpler.

3.Atom: The smallest unit of an element that still has the properties of the element.

4.Proton: A particle with a positive charge in the nucleus of an atom.

5.Neutron: An uncharged particle in the nucleus of an atom.

6.Electron: A particle with a negative charge moving around the nucleus of an atom.

7.Nucleus: The dense center part of an atom.

8.Molecule:   A group of more than one atom  joined together that acts like a single particle.