This document discusses physical and chemical changes in matter and provides examples to help students understand the key differences: - Physical changes alter the physical properties of a substance without changing its chemical composition, such as changes of state between solid, liquid and gas, or cutting and crushing. - Chemical changes involve chemical reactions that alter the molecular structure and create new substances, like rusting, burning, or digestion. - The rock cycle and digestion process involve both physical changes (breaking rocks or movement through the digestive system) and chemical changes (chemical weathering or digestion of food).

1. Matter and Change Part 2 – Changes in Matter

6. Sample Question Source: Spring 2006 TAKS

11. Sample Question Source: Spring 2004 TAKS

13. Sample Question Source: Spring 2004 TAKS

14. Sample Question Source: Spring 2003 TAKS

16. Sample Question Source: Spring 2004 TAKS