Learning Task 4: Read the passage below on chemical and physical
changes. Then, compare and contrast chemical changes and physical
changes by arranging the information using the graphic organizer below.
Identify their differences and similarities. Do this in your notebook,
Chemical and Physical Changes
Any matter can be changed in two ways: chemically and
physically. Physical changes do not change the make-up or identity of
the matter. For example, clay will bend or flatten if squeezed, but it will
still be clay. Molding the clay to change the shape is a physical change,
and does not change the matter's identity. Meanwhile, chemical changes
turn the matter into a new kind of matter with different properties. For
example, a burnt paper becomes ash and will never be turned back to
paper again. The difference between them is that physical changes are
temporary or only last for a little while chemical changes are permanent,
which means they are irreversible. Physical and chemical changes both
affect the state of matter.
affect state of matter
temporary change
permanent change
do not change the properties
changes the properties
Chemical
Change
Physical
Change