An introduction to matter that explains what matter is, how it is used, its different forms, and other related topics.

Includes index.

What are materials? -- How do we use materials? -- What are solids and liquids? -- What are gases? -- WHat is evaporation? -- What is condensation? -- When does matter melt and freeze? -- How does heat change matter? -- What are mixtures and solutions? -- Which materials can be squashed and stretched? -- What are insulators and conductors? -- What will materials be like in the future? -- Testing materials?.