Physical Physical and and

Chemical Chemical ChangesChanges

October 27, 2010October 27, 2010

PHYSICAL CHANGESPHYSICAL CHANGES A physical change is a change in the size, A physical change is a change in the size,

shape, form, or state of matter.shape, form, or state of matter. The chemical makeup of the matter stays the The chemical makeup of the matter stays the

same.same. Water undergoes a change of state when it Water undergoes a change of state when it

changes from a solid to a liquid or a liquid to a changes from a solid to a liquid or a liquid to a gas.gas.

October 29, 2009

CHEMICAL CHANGESCHEMICAL CHANGES In chemical changes, new matter is changed to In chemical changes, new matter is changed to

a different type of matter. a different type of matter. Evidence that a chemical change might have Evidence that a chemical change might have

occurred includes a color or energy change or occurred includes a color or energy change or the formation of a gas or solid.the formation of a gas or solid.

October 29, 2009

Complete the following concept map:Complete the following concept map:

CHEMICAL

EnergyChange

CHANGESCHANGES

Which can be either

Such as a change inWhich is identified by a

October 29, 2009

KEYKEY

CHEMICAL

ColorChange

Gas Released

SolidForms

EnergyChange

PHYSICAL

State Size Shape

CHANGESCHANGES

Which can be either

Such as a change inWhich is identified by a

October 29, 2009