Philosophers and scientists came up with the early ideas of particles. Democritus believed that matter is made up of tiny particles which are indivisible He called this particle, atomos. Two centuries ago, John Dalton presented an evidence that all matter is made up of very small particles called atoms which are indivisible and indestructible What is common in the idea of Democritus and Dalton about the particles of matter? Do you think this idea is final? Why or why not?

Q: 1. A scientist collects data on a sample of Lithium. He determines that 92.3% of the sample is…

A: The atomic mass of lithium = 6.938923 amu

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A: Mass number = number of neutrons + number of protons Atomic number = number of protons

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A:

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A: Information about the question

Q: Please don't provide handwriting solution

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Q: Which of Dalton's five postulates are a consequence of the law of definite proportions?

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A: protons and electrons are elementary particle of atoms .

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A: Subatomic particles are defined as a group of smallest particle which defined whole atom.

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Q: Why do atoms combine chemically with other atoms?

A: To explain: Why do atoms combine chemically with other atoms?

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A:

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A: Isotopes are the species of same element which differ in terms of atomic masses

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A: Given symbols are:- 12854X and 4220X AZX Here, A is atomic mass and Z is atomic number.  128…

Q: i. How do humans use subatomic particles to the benefit of society? Provide an example and explain…

A: Atom has 60 subatomic particles.Mainly there are three subatomic particles.They are proton,electron…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.