Particulate nature of matter

CHEMISTRY SSS1 First Term

WEEK 8

Particulate nature of matter

Performance Objectives

The student should be able to:

  1. Define physical and chemical changes with examples.
  2. Define atoms and molecules.
  3. State Dalton’s atomic theory.

Content

Physical and chemical changes

Physical changes

 A physical change is when matter changes form but not chemical identity. A Material may change shapes or forms while undergoing a physical change, but no chemical reactions occur and no new compounds are produced.

Examples of Physical Changes

No new chemical species forms in a physical change. Changing the state of a pure substance.... View More

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