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Materials: Metals and Non-Metals Class 8 Worksheet Science

Q.1. Which is more reactive iron or copper?

Q.2. What is ductility?

Q.3. Why wires are made of aluminum and copper and not of carbon and sulphur?

Q.4. Which of the two is malleable, phosphorus or iron?

Q.5. What is the nature of the oxide formed by sulphur?

Q.6. Why there is difference in sound on dropping a metal coin and a piece of coal?

Q.7. The shape of the iron nail and the aluminium wire changes on beating. Which property of metals is shown by this?

Q.8. Name the metal which is found in liquid state at room temperature.

Q.9. “The atom of an element remains unaffected by physical changes in the element.” Explain the statement with the help of example.

Q.10. How many naturally occurring elements are there?

Q.11. Explain why aluminium foils are used to wrap food items.

Q.12. Can you store lemon pickle in an aluminium utensil? Explain.

Q.13. Why non-metals cannot be drawn into wires?

Q.14. How metals and non-metals react with water?

Q.15. Explain reaction between sulphur and oxygen. What is the nature of its oxide formed?

You can access the solutions to this worksheet here.

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FAQs on Materials: Metals and Non-Metals Class 8 Worksheet Science

1. What are the main differences between metals and non-metals?
Ans.Metals are typically characterized by their ability to conduct heat and electricity, have a shiny appearance, and are malleable and ductile. Non-metals, on the other hand, are usually poor conductors of heat and electricity, have a dull appearance, and are brittle in solid form.
2. Can you provide examples of common metals and non-metals?
Ans.Common metals include aluminum, iron, copper, and gold. Examples of non-metals are oxygen, nitrogen, sulfur, and carbon. Each of these elements exhibits distinct properties that categorize them into metals or non-metals.
3. How do metals and non-metals react chemically?
Ans.Metals tend to lose electrons during chemical reactions, forming positive ions, while non-metals generally gain electrons to form negative ions. This difference in behavior leads to the formation of ionic bonds between metals and non-metals in compounds.
4. What are the physical properties that distinguish metals from non-metals?
Ans.Metals have high melting and boiling points, are dense, and possess a metallic luster. Non-metals often have lower melting and boiling points, are less dense, and lack luster, appearing dull in their solid forms.
5. Why are metals and non-metals important in everyday life?
Ans.Metals are widely used in construction, electronics, and manufacturing due to their strength and conductivity. Non-metals play essential roles in biological processes, air quality, and are used in various compounds for fertilizers, plastics, and more.
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