The smallest particle that is the bulding block of all matter.
a new substance with unique chemical and physical propeties
A pure substance made of the same atoms all the way throughout
A mixture is a combination of two or more substances that can be seperated physically
A single substance, either a compound or elment
This is important because it tells about what chemical compounds,atoms, pure substances. Most of these vocabulary words are things you will need for chemistrty in later grades. This gives the defonition of theese terms along with a picture for you to better understand theese key elements that are important for life and if you want to become a scientist.