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प्रश्न
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
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उत्तर
Oxygen is an element. It contains the atoms of oxygen of the same kind.
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संबंधित प्रश्न
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Define: Formula
Name: Three different forms of carbon
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Write the names of elements from the following symbol:
Si
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
