Gettin ready for SCIENCE tests!!

I'm getting ready for all the test coning my way. This is  worth it!

• The smallest particle of an element that retains all its properties is known as: the ATOM
• Matter made of atoms of only one type is known as: ELEMENT

• Mass is neither created nor destroyed during a chemical or physical reaction: LAW OF CONSERVATION OF  

and that is what I got for you good luck!=)