18 Questions
Who postulated the idea of Parmanu as the smallest particles of matter in ancient India?
Maharishi Kanad
What term did Democritus use to describe indivisible particles?
Atoms
Who laid the foundation of chemical sciences by establishing two important laws of chemical combination?
Antoine L. Lavoisier
What was the term used by Maharishi Kanad to describe the smallest particles of matter?
Parmanu
Who, along with Leucippus, suggested that there is a limit to dividing matter into smaller particles?
Democritus
What did the ancient Greek philosophers Democritus and Leucippus propose about the divisibility of matter?
There is a limit to dividing matter into smaller particles
According to Dalton's atomic theory, what are atoms?
Atoms are very tiny particles that make up all matter.
What is the main postulate regarding the divisibility of atoms in Dalton's atomic theory?
Atoms are indivisible particles that cannot be created or destroyed in a chemical reaction.
How do atoms of different elements compare according to Dalton's atomic theory?
Atoms of different elements have different masses and chemical properties.
What is the significance of atoms combining in small whole numbers to form compounds?
Atoms combine in fixed ratios to form compounds.
What experimental observation supports Dalton's atomic theory?
The law of definite proportions supports Dalton's atomic theory.
What did Dalton's atomic theory contribute to the understanding of matter?
Dalton's atomic theory provided an explanation for the law of conservation of mass.
What is the purpose of putting a cork on the mouth of the flask during the chemical reaction experiment?
To prevent the solutions X and Y from escaping and ensure that the mass measurement is accurate.
What is the significance of weighing the flask with its contents before and after the chemical reaction?
To observe if there is any change in mass due to the chemical reaction.
Why is it important to carefully hang the ignition tube containing solution X in the conical flask with solution Y?
To avoid premature mixing of the solutions before the experiment begins.
How does swirling the flask after mixing solutions X and Y help in the chemical reaction experiment?
To ensure complete mixing of the reactants for the reaction to occur efficiently.
What does the Law of Conservation of Mass state about the mass of the reactants and products in a chemical reaction?
It states that the total mass of the reactants is equal to the total mass of the products.
Why is it essential to prepare solutions of specific concentrations for the chemical reaction experiment?
To ensure reproducibility and accuracy in the results obtained.
Explore the concept of Proust's Law of Conservation of Mass in chemistry and determine if there is a change in mass during a chemical reaction. This quiz involves selecting sets of chemicals, preparing solutions, and observing mass changes during reactions.
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