Metals and Non-Metals (Worksheet)
Class 8 Science (Based on CBSE Syllabus)
Fill in the blanks with suitable words.
1. A metal that is liquid at room temperature______________
2. A non-metal that is liquid at room temperature ______________
3. Two metals that can be easily cut with knife __________and ___________
4. A property which allows metals to be hammered into thin sheets _______________
5. A property which enables metals to be drawn into wires _________________
6. Metal which neither reacts with cold water nor with hot water ______________
7. Metal that does not corrode in air _____________
8. An element ‘X’ forms a basic oxide. ‘X’ is a _________.
9. The gas evolved when a metal reacts with acid _______________, the gas burns with pop sound.
10. Non-metal which also show lustre ________________
11. _____ is that property of metals which produces ringing sound on hitting.
12. Solid ___________ are soft and dull. They break down into a powdery mass on tapping with a hammer.
13. If a copper vessel is left open in the presence of moist air, then, a dull green coating will be observed on it. The green material is a mixture of _______________ and ________________ .
14. ________ oxides are acidic in nature.
15. A non-metal ________ is very reactive with air and is kept in water to prevent an explosion.
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Answers:
1: Mercury (Hg)
2: Bromine (Br)
3: Sodium (Na) and Potassium (K)
4: Malleability
5: Ductility
6: Iron (Fe) or Copper (Cu) [Note: Iron reacts with steam, Copper does not react with water.]
7: Gold, Platinum [Note: Aluminium forms a protective layer of Aluminium Oxide which prevents further corrosion].
8: Metal (Metal Oxides are basic in nature).
9: Hydrogen gas (H₂)
10: Iodine (I), Graphite (C)
11. Sonorous
12. non-metals
13. copper hydroxide Cu(OH)₂, copper carbonate CuCO₃.
14. Non-metal
15. Phosphorous (Ph)
👉See also:
Ch4 - Metals & Non-Metals(Q & A)
Ch4 - Metals and Non-Metals (MCQs)
Ch4 - Metals and Non-Metals (Prachi Textbook Solutions)
Ch4 - Uses of Some Common Metals and Non-Metals
Ch4 - Metals and Non-Metals (MCQs)
Ch4 - Metals and Non-Metals (Prachi Textbook Solutions)
Ch4 - Uses of Some Common Metals and Non-Metals
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