Vocabulary 4

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



Compound: A chemical combination of tow or more elements into a single substance.



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



Proton: A particle with a positive chage in theb nucleous of an atom.


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


electron: A particle whioth a negative charge miving around the nucleus of an atom.


Nucleus: The dense center part of an atom.


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