vocabulary# 6

element a basic building block of matter,a pure substance that
cannot be broken down into anything simpler.

compound a chemical combination of two or more elements into single substance.

atom the smallest unit of an elemaent that still has the properties of the element.

proton a particle whith a positive charge in the nucleous of an atom.

neutron an uncharge particle in the nucleous of an atom.

electron a particle whith a negative charge moving around the nucleous of an atom.

nucleous the dense center part of an atom.

molecule a group of more than one atom joined together that acts like a single particle.
ilustrate