Which part of John Dalton’s theory was disproved by J.J. Thomson’s cathode-ray tube experiments?     A:Atoms can form new substances. B:Atoms are small. C:Atoms are indivisible. D:Atoms can join together.

Q: A. Explain how you would determine the number of neutrons in a chlorine atom that has a mass number…

A: Given, A chlorine atom has a mass number of 37 Another chlorine atom has a mass number of 35…

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A: Metal are hard , shiny, magnetic , and a good conductor of electricity .

Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: In the given chemical change, the starting materials consist of four green spheres and two purple…

Q: What are the observations and conclusions drawn  by J.J. Thomson while conducting experiments with a…

A: J. J. Thomson developed a glass tube that was partially evacuated, meaning that the building's air…

Q: 8) What kind of formular is C,H,O, consider as? A) Empirical formula B) Moleculr formula C)…

A: Protons and neutrons are present inside the nucleus and electrons are revolving around the nucleus…

Q: Choose one radioisotope and expalain its hazards and uses. b.) Give the A/Z and symbol-mass format…

A: Dear Subscriber! You have posted multiple questions. As per our policy, we have solved only first…

Q: Two samples of carbon monoxide are decomposed into their constituent elements. One sample of liquid…

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Q: e terms atomic number, mass number, and atomic mass. Then, (ii) explain what isotopes are and (iii)…

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Q: Which of Dalton’s postulates about atoms are inconsistent with later observations? Do these…

A: In 1808 John Dalton has provided the first atomic theory. He has stated that all matter is made up…

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? Two…

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Q: Which statements are consistent with Dalton’s atomic theory as it was originally stated? Why?a.…

A: Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and…

Q: How has the understanding of the structure of the atom changed over time? Briefly describe the…

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Q: Provide a description of Rutherford’s gold foil experiment and the explanation for the results…

A: Rutherford's gold (Au) foil experiment:- Rutherford's experiment helps in understanding the atom in…

Q: Which two atoms are isotopes of one another? Atom #p* # n° #e A 10 8 B 10 9 10 9. D 11 A) A-B B) B-C…

A: Given, Atom no. of protons no. of neutrons no. of electrons A 8 10 8 B 10 9 10 C 9 9 9 D…

Q: Compare the plum pudding model of Thomson to the nuclear model of Rutherford. Describe the…

A: Plum pudding model of Thomson : In 1898, J. J. Thomson proposed the first of many atomic models to…

Q: Why is it important to study atomic theory?

A: Matter is composed of small particles . Atomic theory tells about the particles and refereed them as…

Q: John Dalton was an English scientist who lived from 1766 to 1844. Dalton's significant contributions…

A: Dalton put forward the theory of matter. It is the oldest theory that explains the nature of matter.…

Q: Which of these is found in the nucleus of an atom? * -Protons -Electrons -DNA -Depends on the atom

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Q: Explain how each scientist’s experiment contributed to the characterization of the atom (example:…

A: We have to explain each scientist’s experiment.

Q: [References] Americium-241 is an isotope of americium used in household smoke detectors. This…

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Q: 1. What is the name of John Dalton's theory? 2. What are elements made of? 3. An atom of hydrogen…

A: As you have posted a question with multiple parts, we will solve the first three parts for you. To…

Q: Dalton theorized that matter is made of tiny invisible particles called atoms. in what way did the…

A: The most significant of all the Dalton’s investigations were related with the atomic theory.…

Q: Which is a compound? A. A piece of pure zinc metal B. A molecule made of nitrogen and oxygen C. An…

A: Compound: A molecule consisting of two different elements is called compound

Q: Which scientist suggested that atoms combine in different whole-number ratios to form compounds but…

A: Dalton explain first of all the Atomic theory of atom. In 1808 he put forward a theory which is…

Q: Which of the following is not part of Daltons atomic theory? 1) Atoms of different elements…

A: Daltons atomic theory: All matter is comprised of tiny, definite particles called atoms. Atoms are…

Q: Which statements are inconsistent with Dalton’s atomic theory as it was originally stated? Why?a.…

A: Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and…

Q: ow many protons does aluminum (Al) have? How many neutrons? How many electrons?

A: Aluminium  atomic number = 13  Electronic  configuration  of aluminium = 1s22s22p63s23p1

Q: Which of the following was not postulated by Dalton? Group of answer choices A, Atoms of one element…

A: The Dalton atomic theory was the first attempt to describe the structure of an atom. According to…

Q: What if Rutherford believed atoms were as Dalton envisioned them? What do you suppose Rutherford…

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Q: The atomic theory states that all matter is made of atoms. These atoms are made of subatomic…

A: Matter is made up of atoms.  Atom contains particles like electron, proton and neutron. Proton and…

Q: In the Rutherford Gold Foil Experiment, why did Rutherford expect the alpha particles to pass…

A: Based on Thomson's plum pudding model, Rutherford predicted that most of α particles would pass…

Q: wwww TTTTT The atom is a solid sphere that was allowed to participate in chemical reactions. 10.…

A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: A selection of the most prominent individuals mentioned in this topic is given below. Match Column A…

A: In one column , there is different names of Scientists.  On the other column, there is some of the…

Q: Rutherford’s gold foil experiment gave scientists clues to the composition of the atom. One thing…

A: In Rutherford's Gold foil experiment,  proved that atom composed with two things - - 1) positively…

Q: A jewelry company has announced that they have created gold from reacting copper and carbon in a…

A: Dalton is the name of the scientist who gave Dalton's atomic theory.

Q: What did Rutherford conclude about the atom that would explain the unexpected result explain

A: Rutherford performed the α-particle scattering experiment and observed that most of the α- particles…

Q: The 3rd postulate of Dalton’s Atomic Theory is consistent with a Law developed by a French scientist…

A: 1st atomic theory is proposed by John Dalton, That talks about atoms and it's properties, named as…

Q: Which of John Dalton’s theories given below were found to be INCORRECT? 1. the atoms of elements…

A: Dalton's atomic theory was the first theory to describe all matter in terms of atoms and their…

Q: A 25.0 g sample of sucrose is found to contain 51.4% by mass oxygen. A second sample of sucrose…

A: The above statement is consistent with law of Constant Composition.

Q: What discoveries were made by J.J thompson and Lord rutherford? How did Daltons model of the atom…

A: J.J. Thomson experiment: - J. J. Thomson's cathode rays experiment leads to the conclusion that…

Q: Outline Rutherford’s Gold foil experiment, including the observations and conclusions from his…

A: The arrangement of electrons, protons and neutrons inside the atoms is explained by different atomic…

Q: Describe the Rutherford gold foil experiment in 50 words (or formulas or chemical equations) or…

A: Rutherford gold foil experiment has been explained below.

Q: Draw your own concept of an atom. You may refer to the model given by Bohr for an idea of the atom…

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Q: Which of the following experiments helped to support Dalton’s atomic theory? A)Thomson’s cathode…

A: Dalton's Atomic Theory 1) All matter is made of atoms. They are indivisible and indestructible. 2)…

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.