Section One: What Is Matter ?

• How Can Matter Be Classified? .  Matter can be classified by Elements,Compounds, and Mixtures

• Why are Elements and Compounds considered Pure Substances? . Elements are one type of atom and compounds are made up of two or more atoms that are chemically bond 

• How are Elements and Compounds different from Mixtures? . Elements cannot be broken down by chemical or physical mean b/c only consist of one atom. Compounds can be broken down by chemical mean. And mixtures can be broken down by chemical mean and by physical mean.