Download Chemical or Physical Change?

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.