Class 10 Science — Chapter 3: Metals and Non-metals

What you'll learn

• ▸Physical Properties of Metals
• ▸Physical Properties of Non-metals
• ▸Exceptions in Physical Properties
• ▸Reaction of Metals with Oxygen (Air)
• ▸Nature of Metal and Non-metal Oxides
• ▸Amphoteric Oxides
• ▸Reactivity Differences and Protective Layers
• ▸Anodising

Chapter Summary

--- PAGE 1 --- CHAPTER 3 Metals and Non-metals 1064CH03 In Class IX you have learnt about various elements. You have seen that elements can be classified as metals or non-metals on the basis of their properties. Think of some uses of metals and non-metals in your daily life. What properties did you think of while categorising elements as metals or non-metals? How are these properties related to the uses of these elements? Let us look at some of these properties in detail. 3.1 PHYSICAL PROPERTIES 3.1.1 Metals The easiest way to start grouping substances is by comparing their physical properties. Let us study this with the help of the following activities. For performing Activities 3.1 to 3.6, collect the samples of following metals – iron, copper, aluminium, magnesium, sodium, lead, zinc and any other metal that is easily available. Activity 3.1 Take samples of iron, copper, aluminium and magnesium. Note the appearance of each sample. Clean the surface of…

Practice Questions from this Chapter

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1. Explain why metals conduct electricity. Get Solution →
2. Describe common uses of non-metals. Get Solution →
3. Compare gold's malleability to iron's. Get Solution →
4. What is the property of metals that describes their shining surface in a pure state? Get Solution →
5. The ability of metals to be beaten into thin sheets is known as what? Get Solution →
6. According to the text, which metal is the most ductile? Get Solution →
7. Which of the following non-metals is a liquid at room temperature? Get Solution →
8. Most non-metals produce which type of oxides when they dissolve in water? Get Solution →

Did you know?

• 💡 Pure gold is so soft you can actually dent it with your fingernail.
• 💡 Liquid mercury was once used in thermometers and even some old medicines.
• 💡 A diamond, made of carbon, will completely burn into gas if heated hot enough.
• 💡 Alkali metals like sodium are so light they can float on water.
• 💡 The human body contains many metals, including iron, zinc, and even trace amounts of gold.

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