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Questions and Answers
Who is credited with the concept of 'atomas' and the idea that matter consists of small, indivisible particles?
Who is credited with the concept of 'atomas' and the idea that matter consists of small, indivisible particles?
- John Dalton
- Isaac Newton
- Aristotle
- Democritus (correct)
According to John Dalton's atomic theory, what is the nature of atoms of the same element?
According to John Dalton's atomic theory, what is the nature of atoms of the same element?
- They are divisible into smaller particles
- They are always in a combined state
- They are identical (correct)
- They vary in weight and chemical properties
What is the concept that atoms of different elements combine in simple whole numbers to form compounds known as?
What is the concept that atoms of different elements combine in simple whole numbers to form compounds known as?
- Law of Definite Proportions (correct)
- Law of Multiple Proportions
- Avogadro's Law
- Gay-Lussac's Law
In John Dalton's atomic theory, what is the nature of atoms of different elements?
In John Dalton's atomic theory, what is the nature of atoms of different elements?
What is the term used to describe the number of atoms, ions, or molecules in a substance, which is equal to the number of atoms in exactly 12 grams of pure carbon-12?
What is the term used to describe the number of atoms, ions, or molecules in a substance, which is equal to the number of atoms in exactly 12 grams of pure carbon-12?
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Study Notes
Atomic Theory
- The concept of 'atomas' is credited to John Dalton, who proposed that matter consists of small, indivisible particles.
Atoms of the Same Element
- According to John Dalton's atomic theory, atoms of the same element are identical in mass, size, and properties.
Compounds Formation
- The concept that atoms of different elements combine in simple whole numbers to form compounds is known as the Law of Definite Proportions.
Atoms of Different Elements
- In John Dalton's atomic theory, atoms of different elements vary in mass, size, and properties.
Mole
- The term used to describe the number of atoms, ions, or molecules in a substance, which is equal to the number of atoms in exactly 12 grams of pure carbon-12, is called a mole.
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