Matter Anything that has mass and takes up space Mass –Amount of matter the object contains
Substances Matter that is uniform and has a definite composition (Pure Substances) Is sugar a pure substance? –Yes—100% sucrose Is lemonade a pure substance?
Physical Properties Quality or condition of a substance that can be observed or measured without changing the substance’s composition What are some? –Color, solubility, odor, hardness, density, melting point, boiling point
States of Matter Solids –Matter that has definite shape and volume Liquids –Form of matter that flows, has a fixed volume, and takes the shape of its container Gases –Form of matter that takes both the shape and volume of its container –Vapor—Gaseous state of a substance that is normally a solid or liquid (not interchangeable with the term gas)
Physical Changes A change which alters the material without altering the chemical composition of it –Melting of ice –Freezing of water –Water to steam –Etc etc
Mixtures Physical blend of two or more substances Like a salad! Heterogeneous mixtures –Not uniform in composition Homogeneous mixtures –Completely uniform composition Salt Water
Solutions Special name for a homogeneous mixture Solutions may be liquids, solids, or gases
Separating Mixtures Distillation –A liquid is boiled to produce a vapor that is then condensed again to a liquid –Tap Water