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प्रश्न
Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.
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उत्तर
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संबंधित प्रश्न
Differentiate between the following.
Filter Paper and Alum
Differentiate between:
Homogenous and heterogenous substances
Define: Atom
Give one use of the following substance:
Brass
Find the atomicity of the Following molecule:
Dinitrogen Oxide
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Give the name of the radical - NO3
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is required for combustion.
Reason out
Elements are called semimetals.
