10 Questions
What is the main idea behind the Law of Definite Proportions?
The masses of the constituents of a compound always have the same proportions.
What is the carbon-to-hydrogen mass ratio in isooctane?
5.33:1
What is the main idea behind the Law of Multiple Proportions?
The weights of one element that combine with a fixed weight of another element are integer multiples of one another.
What is an example of an element that forms multiple oxides?
Nitrogen
Who formulated the Law of Definite Proportions?
Joseph Proust
What is the fundamental principle behind the law of conservation of matter?
Matter cannot be created or destroyed, only transformed.
What is the condition required for the law of conservation of matter to apply?
The system must be closed to the transfer of matter.
What is the result of a physical or chemical change according to the law of conservation of matter?
The total mass of the products remains equal to the total mass of the reactants.
What is the concept that argues that what exists now has always existed?
The concept of 'nothing comes from nothing'.
Who restated the principle of 'nothing comes from nothing' for chemistry?
Antoine Lavoisier.
Test your understanding of the fundamental principle in chemistry that states matter cannot be created or destroyed, only transformed. Learn about the history and significance of this concept, from ancient Greek philosophy to Antoine Lavoisier's restatement.
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