Identifying the Purpose and Text Structure
Read the passages. Identify the purpose and text structure.
1. All things can be changed in two ways: chemically and physically. Both
chemical and physical changes affect the state of matter. Physical changes
are those that do not change the identity of the matter. For instance, clay will
bend if squeezed. Still it will be a clay. Change in shape is a physical change.
It does not change the matter’s identity. Chemical changes turn the matter
into a new kind of matter with different properties. For instance, when paper
is burnt, it becomes ash. It will never be paper again. The difference between
them is that physical changes are temporary. While chemical changes are
permanent. Physical and chemical changes both affect the state of matter.