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प्रश्न
Differentiate metals and non-metals.
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उत्तर
| Metals | Non-Metals |
| Metals are lustrous. They have a shiny | Non metals are non lustrous. They |
| surface | have non- shiny surface |
| Metals are generally hard | Non-metals are generally soft |
| Most metals are bendable | Non-metals are non bendable |
| Most metals can be bent, beaten into sheets and they can drawn into wires | Non-metals are non ductile |
| Most metals are good conductors of electricity | Non-metals are bad conductors of electricity |
| Most metals are good conductors of heat | Non-metals are bad conductors of heat |
| Most metals are making ringing sound when struck. Hence, they are used to make objects like bells | Non-metals does not make any sound when they struck |
| Ex. : Copper, Lead, Tin, Nickel | Ex. : Carbon, Iodine, Sulphur |
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संबंधित प्रश्न
Name a soft metal.
Classify the following substances into compounds and mixtures:
State four differences between compounds and mixtures.
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
Indicate whether the following statement is true or false:
Metals can be polished.
Tick (√) the correct alternative from the choice given for the following statement.
Brass and bronze are
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
Classify substances into pure and impure substances in the form of a chart or tabulation.
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
