UNIT 5: WE SAVE ENERGY.

In this unit, called "We save energy", we will study:

- Matter and its properties. 

- Difference between matter and non-matter.

- Concept of substance. 

- Properties of matter. 

- States of matter and properties of solids, liquids, and gases. 

- States of water and changes caused by melting, evaporation, solidification, and condensation. 

- Different forms of energy.

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PAGES 86 - 87

PAGES 88 - 89

PAGES 90 - 91

- In  these pages we will study what are the  heat and temperature and we will classify the materials in conductors and insulators.

PAGES 92 - 93

PAGES 94 - 95

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PAGES 100 - 101