2. THE CLASSIFICATION OF MATTER

3. Matter Anything that has mass and volume Anything that has mass and volume A material is a specific kind of matter A material is a specific kind of matter

4. A Pure Substance A pure substance has a definite composition and definite properties. A pure substance has a definite composition and definite properties. A pure substance can be an element or a compound. A pure substance can be an element or a compound. An element is composed of only one kind of atom. It can not be decomposed by chemical means. An element is composed of only one kind of atom. It can not be decomposed by chemical means. A compound is composed of two or more elements chemically combined in a specific ratio. A compound is composed of two or more elements chemically combined in a specific ratio.

5. MIXTURES A mixture is composed of two or more materials physically blended. A mixture is composed of two or more materials physically blended. The components of a mixture retain their properties. The components of a mixture retain their properties. The components of a mixture can be in varied amounts. The components of a mixture can be in varied amounts.

6. Homogeneous Mixture A solution is a homogeneous mixture A solution is a homogeneous mixture A homogeneous mixture has more than one material, but only one phase. A homogeneous mixture has more than one material, but only one phase. A homogeneous mixture can be separated by physical changes. A homogeneous mixture can be separated by physical changes.

7. HETEROGENEOUS MIXTURES A mixture that has more than one material, and obviously different parts. A mixture that has more than one material, and obviously different parts. Has more than one phase. Has more than one phase. Can be separated by physical means. Can be separated by physical means.

8. CLASSIFICATION PRACTICE Ocean water Ocean water Calcium Calcium Vitamin-C Vitamin-C Dry ice Dry ice Copper Copper Grain alcohol Grain alcohol Hamburger Hamburger Aluminum Aluminum Whole milk Whole milk After- shave splash After- shave splash Table salt Iron nail Clean air Blood Antimony Brass Ammonia Mustard Zinc Stainless steel