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प्रश्न
What is meant by H20 and 3H2O
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उत्तर
H20 represents one molecule of water. 3H20 represents 3 molecules of water.
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संबंधित प्रश्न
Give two examples of the following.
Non-metals which are solids
Fill in the blank
A metal which is a liquid at room temperature is _______.
Indicate whether the following statement is true or false:
Metals can be polished.
Indicate whether the following statement is true or false:
Elements are made up of compounds
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Select the correct answer from the choice in the bracket.
The least reactive metal.
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
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 |
______ is a mixture of gases.
