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प्रश्न
What are elements? What are they made of?
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उत्तर
- Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.
- It is made of entirely from one type of atom.
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संबंधित प्रश्न
Give two examples for the following: Metals
Define the term: Element
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
Fill in the blank
The most abundant element in the earth’s crust is _______.
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
Draw a labelled diagram of an atom including its nucleus, orbits & their contents.
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.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
The first letter of an element is always written in ______ letter.
