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?
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1. What are the main differences between metals and non-metals? |
2. Can you provide examples of common metals and non-metals? |
3. How do metals and non-metals react chemically? |
4. What are the physical properties that distinguish metals from non-metals? |
5. Why are metals and non-metals important in everyday life? |
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