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प्रश्न
Define Elements.
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उत्तर
Elements: An element is defined as a pure substance made up of only one kind of atoms that cannot be converted into anything simpler than itself by any physical or chemical process.
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संबंधित प्रश्न
Give Two Examples for Each of the Following: Metalloids
Give two examples of the following.
Non-metals which are lustrous
Give two examples of the following.
Inert gases
Mention three gaseous elements and write their molecular formulae
Give one use of the following substance:
Iron
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Differentiate between elements and compounds.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
