Vocabulary 6 - what matter is made of

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

2.Compound: a chemical combination of two or more elements into a single substance.

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

4.Proton: a particle with a negative charge moving around the nucleos of an atom.

5.Neutron: an uncharged particle in the nucleos of an atom.

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

7.Nucleos: the dense center part of an atom.

8.Molecule: a group of more tha ¡n one atom joined together that acts like a single particle.