UNIT OVERVIEW

Everything around you is made of matter — the air you breathe, the water you drink, and the phone in your hand. In this unit, you will learn how scientists classify and organise the millions of different substances in our world into neat, logical categories.

By the end of this unit, you will be able to:

• Distinguish between heterogeneous and homogeneous mixtures
• Classify pure substances as elements or compounds
• Write and interpret chemical names and formulae correctly
• Identify metals, metalloids, and non-metals and explain their properties
• Classify materials as electrical conductors, semiconductors, or insulators
• Distinguish between thermal conductors and thermal insulators
• Identify magnetic and non-magnetic materials

---