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प्रश्न
Fill the following blanks with suitable words :
In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................
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उत्तर
In a chemical reaction, the sum of masses of the reactants and their products remain unchanged. This is called the law of conservation of mass.
संबंधित प्रश्न
What is the significance of the formula of a substance ?
The element having atomicity 'four' is most likely to be :
Write down the formulae for the following compounds :
Calcium oxide
If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
Write the formula of the following compound:
Copper [II] chloride
Write the formula of the following compound:
Iron [II] chloride
