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Atoms and Molecules Class 10 Science Study Material
Here, we will be studying about Dalton's Theory and the Laws of Chemical Combination, Atoms, Molecules and Ions. We will also be learning how to write the chemical formulas of compounds, determining molecular mass and formula unit mass and will also understand the Mole Concept.
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Some Important NCERT Questions from Atoms and Molecules Chapter
Question 1:
In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.
Sodium carbonate + ethanoic acid → sodium ethanoate + carbon dioxide + water
Question 2:
Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
Question 3:
Which postulate of Dalton's atomic theory is the result of the law of conservation of mass?
Question 4:
Which postulate of Dalton's atomic theory can explain the law of definite proportions?
Question 5:
Define atomic mass unit.
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Important Questions for Atoms and Molecules Science Chapter
