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The World of Metals and Non-Metals Video Lecture | Science (Curiosity) Class 7 - New NCERT

FAQs on The World of Metals and Non-Metals Video Lecture - Science (Curiosity) Class 7 - New NCERT

1. What are metals and non-metals?

Ans.Metals are elements that are typically hard, shiny, and good conductors of heat and electricity. They are malleable and ductile, meaning they can be shaped and stretched. Non-metals, on the other hand, are elements that lack these properties. They are usually not shiny, poor conductors, and can be gases or brittle solids at room temperature.

2. How do metals and non-metals react with each other?

Ans.Metals and non-metals can react to form ionic compounds. When a metal reacts with a non-metal, the metal tends to lose electrons and form positive ions, while the non-metal gains those electrons and forms negative ions. This transfer of electrons results in the formation of ionic bonds, which hold the compound together.

3. What are some common examples of metals and non-metals?

Ans.Common examples of metals include iron, copper, aluminum, and gold. These are often used in construction, electronics, and jewelry. Non-metals include oxygen, nitrogen, sulfur, and chlorine. These elements are essential for life and are found in various compounds in nature.

4. What are the physical properties that differentiate metals from non-metals?

Ans.Metals are generally solid at room temperature (except mercury), have high melting and boiling points, are malleable, ductile, and good conductors of heat and electricity. Non-metals can be gases, liquids, or brittle solids, have lower melting and boiling points compared to metals, and are poor conductors of heat and electricity.

5. Why are metals important in our daily life?

Ans.Metals play a crucial role in our daily life due to their wide range of applications. They are used in construction (steel and aluminum), transportation (cars and airplanes), electronics (copper and gold), and even in healthcare (medical instruments). Their properties make them indispensable in various industries and everyday items.

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Sep 26, 2025 Last updated

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	Science (Curiosity) Class 7 - New NCERT 80 videos\|224 docs\|12 tests

Science (Curiosity) Class 7 - New NCERT

80 videos|224 docs|12 tests

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