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Mr. Shepherd’s Physical Science Class Name:___________________ Class: ___________________ Chapter 17: _______________________________________________ Section 2: _______________________________________________ Physical Properties Any characteristics of a material that you can observe without changing the identity of the substances that make up the material is _________________. Examples--APPEARANCE: color, shape, size, melting point, boiling point; BEHAVIOR: attraction to a magnet, ability to flow. Physical Change A change in SIZE, SHAPE, OR STATE OF MATTER is called a ________ _____________________________ These changes might involve energy changes, but the kind of substance—the IDENTITY of the element or compound—DOES NOT CHANGE. Distillation is a process for separating substances in a mixture by EVAPORATING liquid and RECONDENSING its vapor. Ex. Purifying water (distilled water) Chemical Properites A _________________________________ is a characteristic of a substance that indicates whether it can change into another substance. Ex. Flammability, or the tendency of a substance to burn, because burning produces NEW SUBSTANCES. A change of one substance to another is a _________________________. Ex.’s—RUST on car fenders, SMELL of rotten eggs, food BURNING in the oven, FOAMING of an antacid tablet in water In some chemical changes, a RAPID RELEASE OF ENERGY---detected as ______________, ___________________, AND ________________—are CLUES that changes are occurring. Chemical or Physical Change? PHYSICAL CHANGE—Large rocks can split when water seeps into small cracks , freezes, and expands. However, the smaller pieces of newly exposed rock still have the _________ __________________________ as the original rock. CONSERVATION OF MASS—Matter is neither created nor destroyed during a chemical change. The Law of Conservation of Mass states-The ____________ of all substances ______________ a chemical change ____________________ the ______________ of all the substances that remain _________________ the change.