13 Metals
13.1 History fo the Use f Metals
13.2 How to Obtain Meatls
13.3 Properties and Uses of Metals
13.4 Making Metals More Useful
13.5 Environmental Problems Associated with the Disposal of Used Metals
Summary
Glossary
Key Points
Test youreslf
14 Materials of the Modern World
14.1 Making Plastics from Crude Oil
14.2 Environmental Probems Associated with the Disposal of Plastics
14.3 Composite Materials
Summary
Glossary
Key Points
Test yourself
15 Light,Colours and Beyond
15.1 How Do We See an Object?
15.2 Reflection at Plane Surfaces
15.3 Colour
15.4 Beyond the Visible Spectrum
15.5 Beyond Infrared and Ultraviolet
15.6 Refraction and Its Practical Uses
15.7 Optical Fibres and Total lnternal Reflection
Summary
Glossary
Key Points
Test youreslf
index