Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Q1: What is the property that allows metals like gold to be stretched into thin wires?
Ans: Ductility. Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Q2: What items do ironsmiths generally make?
Ans: Flat pans, buckets, tongs, spades, axes, trowels, and rakes.

Q3: What material is mainly used to make these items?
Ans: Iron metal.

Q4: What is used to heat the iron in the furnace?
Ans: Coal.

Q5: What is the property that allows metals to be beaten into thin sheets?
Ans: Malleability.

Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Q6: Which metal is the most malleable?
Ans: Gold.

Q7: What happens to metals like copper and aluminum when beaten with a hammer?
Ans: They flatten.

Q8: What is the name of the process when metals break into pieces?
Ans: Brittle behavior.

Q9: What does ductility allow metals to do?
Ans: Be drawn into wires.

Q10: Which metal is used for making electric wires?
Ans: Copper.

Q11: What is the ringing sound produced by metal called?
Ans: Sonority. Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Q12: What property of metals makes them good for cooking vessels?
Ans: Conduction of heat.

Q13: What is the term for the process when iron gets damaged by exposure to air and water?
Ans: Rusting.

Q14: What is the brown deposit formed on iron due to rusting called?
Ans: Rust. Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Q15: Which metal reacts vigorously with water and is stored in kerosene?
Ans: Sodium.

Q16: What is the nature of the oxide of magnesium?
Ans: Basic.

Q17: What type of reaction occurs when magnesium burns in air?
Ans: It forms magnesium oxide. Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Q18: What is the purpose of applying a protective layer of zinc on iron?
Ans: To prevent rusting.

Q19: Which non-metal is essential for respiration?
Ans: Oxygen.

Q20: What is formed when sulfur reacts with oxygen?
Ans: Sulfur dioxide.

FAQs on Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

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

1. What are the main differences between metals and non-metals?

Ans. Metals are generally solid at room temperature, shiny, and good conductors of heat and electricity. Non-metals can be solids, liquids, or gases, are not shiny, and are poor conductors of heat and electricity.

2. How do metals and non-metals react with oxygen?

Ans. Metals usually react with oxygen to form metal oxides, which are often basic in nature. Non-metals react with oxygen to form non-metal oxides, which are usually acidic or neutral.

3. What are some common uses of metals and non-metals in everyday life?

Ans. Metals are used in construction (like steel), electronics (like copper), and transportation (like aluminum). Non-metals are found in products like water (H2O), fertilizers (nitrogen), and medicines (sulfur).

4. Can you give examples of metals and non-metals?

Ans. Common examples of metals include iron, copper, and gold. Examples of non-metals include oxygen, nitrogen, and sulfur.

5. How are metals and non-metals classified in the periodic table?

Ans. In the periodic table, metals are found on the left side and in the center, while non-metals are located on the right side. This classification helps in understanding their properties and reactivity.

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Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Science (Curiosity) Class 7 - New NCERT

FAQs on Class 7 Science Chapter 4 Very Short Question Answer - The World of Metals and Non-metals

Science (Curiosity) Class 7 - New NCERT

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