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प्रश्न
Define the term: Element
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उत्तर
Element is a substance which cannot be split up into two or more simple substances by usual chemical methods of applying heat, light or electric energy; for example, hydrogen, oxygen and chlorine.
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संबंधित प्रश्न
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Give Two Examples for Each of the Following: Non-metals
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
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Define:
Atomicity
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Acetic Acid
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The most abundant element in the atmosphere is _______.
Indicate whether the following statement is true or false:
Noble gases are high reactive
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Ozone is a triatomic molecule
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The type of molecule- bromine
Write an answer to the following question in your own words.
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A metalloid
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
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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A metalloid.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
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- Separation of liquids by this process is based on which physical property?
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- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
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