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Chemical Combination Laws and Atomic Theory

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Chemical Combination Laws and Atomic Theory

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Questions and Answers

What principle did Antoine Lavoisier establish through his experiment with heating mercury?

Principle of conservation of mass (correct)

Principle of atomic structure

Principle of mass-energy equivalence

Principle of definite proportions

Why did Antoine Lavoisier use an analytical balance in his experiment with mercury?

To determine reaction speed

To measure temperature

For high accuracy in measurements (correct)

To observe color changes

What was the identity of the gas that Lavoisier produced in his experiment with mercury oxide?

Oxygen (correct)

Carbon dioxide

Nitrogen

Hydrogen

Why did Joseph Proust disagree with Claude Berthollet's belief regarding fixed proportions in compounds?

Impurities and experimental errors can cause apparent variations Signup and view all the answers

What important scientific law did Joseph Proust propose based on his experiments with compounds?

Law of definite proportions Signup and view all the answers

What did the development of the law of definite proportions demonstrate about science according to the text?

How science progresses Signup and view all the answers

What did the studies about heat and combustion during the 18th century help to formulate?

The laws of chemical combination Signup and view all the answers

What was observed when an organic material was burned?

A solid residue such as ash was left Signup and view all the answers

What was the formation of 'calx', which is now called oxide, observed when?

When metal was heated in air Signup and view all the answers

What did the convenient method for counting the number of atoms of each element in a reaction suggest?

The existence of atoms and molecules Signup and view all the answers

What did the laws of chemical combination summarize?

The basic principles obeyed in the interaction of atoms and molecules Signup and view all the answers