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Questions and Answers
According to the law of conservation of mass, what can be said about mass in a chemical reaction?
According to the law of conservation of mass, what can be said about mass in a chemical reaction?
- Mass can be created in a chemical reaction
- Mass can be destroyed in a chemical reaction
- Mass changes its form in a chemical reaction
- Mass can neither be created nor destroyed in a chemical reaction (correct)
What did Lavoisier and other scientists observe regarding the composition of compounds according to the law of constant proportions?
What did Lavoisier and other scientists observe regarding the composition of compounds according to the law of constant proportions?
- Compounds do not follow any specific proportion rule
- Compounds have varying compositions depending on the source
- Compounds have different elements in different proportions from the same source
- Compounds have the same elements in fixed proportions regardless of the source (correct)
What important concept did John Dalton provide regarding the nature of matter?
What important concept did John Dalton provide regarding the nature of matter?
- Matter cannot be divided into smaller particles
- Atoms are the smallest particles of matter (correct)
- Greeks discovered the concept of atoms
- The divisibility of matter is infinite
Why did Lavoisier and Proust conduct experiments with solutions X and Y? What were they trying to determine?
Why did Lavoisier and Proust conduct experiments with solutions X and Y? What were they trying to determine?
What is the significance of the law of constant proportions in chemistry?
What is the significance of the law of constant proportions in chemistry?
What did Lavoisier and Joseph Proust observe about compounds according to the law of constant proportions?
What did Lavoisier and Joseph Proust observe about compounds according to the law of constant proportions?
Who postulated the idea of Parmanu, the smallest particles of matter, in ancient India?
Who postulated the idea of Parmanu, the smallest particles of matter, in ancient India?
What did Democritus call the indivisible particles that he proposed in ancient Greece?
What did Democritus call the indivisible particles that he proposed in ancient Greece?
Which philosopher mentioned that particles obtained from dividing matter cannot be further divided?
Which philosopher mentioned that particles obtained from dividing matter cannot be further divided?
In what era did ancient Indian philosophers discuss the divisibility of matter?
In what era did ancient Indian philosophers discuss the divisibility of matter?
What did Antoine L. and other scientists become interested in by the end of the eighteenth century?
What did Antoine L. and other scientists become interested in by the end of the eighteenth century?
Which ancient philosopher associated with Indian philosophy elaborated on the doctrine of Parmanu and its combined form existence?
Which ancient philosopher associated with Indian philosophy elaborated on the doctrine of Parmanu and its combined form existence?
