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प्रश्न
Define: Molecule
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उत्तर
Molecule: A molecule can be defined as the smallest unit of an element or a compound which exhibits all the properties of that element or compound and has an independent existence. They are divisible into atoms.
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संबंधित प्रश्न
Name: Two substances used to make jewellery.
Give one use of the following substance:
Brass
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Give an example of two liquids that form heterogeneous mixtures.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Elements are the______ form of pure substances.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
______ is a mixture of gases.
Name the element which is used for making computer chips.
