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    which statement describes the earliest model of the atom?

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    Which statement describes the earliest model of the atom?

    A) An atom is an indivisible hard sphere.

    B) An atom has a small, dense nucleus.

    C) Electrons are negative particles in an atom.

    D) Electrons in an atom have wave-like properties.

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    A) An atom is an indivisible hard sphere.

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    Which sequence represents a correct order of historical developments leading to the modern model of the atom?

    A) the atom is a hard sphere → most of the atom is empty space → electrons exist in orbitals outside the nucleus

    B) the atom is a hard sphere → electrons exist in orbitals outside the nucleus → most of the atom is empty space

    C) most of the atom is empty space → electrons exist in orbitals outside the nucleus → the atom is a hard sphere

    D) most of the atom is empty space → the atom is a hard sphere → electrons exist in orbitals outside the nucleus

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    A) the atom is a hard sphere → most of the atom is empty space → electrons exist in orbitals outside the nucleus

    Click again to see term 👆

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    Terms in this set (17)

    Which statement describes the earliest model of the atom?

    A) An atom is an indivisible hard sphere.

    B) An atom has a small, dense nucleus.

    C) Electrons are negative particles in an atom.

    D) Electrons in an atom have wave-like properties.

    A) An atom is an indivisible hard sphere.

    Which sequence represents a correct order of historical developments leading to the modern model of the atom?

    A) the atom is a hard sphere → most of the atom is empty space → electrons exist in orbitals outside the nucleus

    B) the atom is a hard sphere → electrons exist in orbitals outside the nucleus → most of the atom is empty space

    C) most of the atom is empty space → electrons exist in orbitals outside the nucleus → the atom is a hard sphere

    D) most of the atom is empty space → the atom is a hard sphere → electrons exist in orbitals outside the nucleus

    A) the atom is a hard sphere → most of the atom is empty space → electrons exist in orbitals outside the nucleus

    The results of the gold foil experiment led to the conclusion that an atom is

    A) mostly empty space and has a small, negatively charged nucleus

    B) mostly empty space and has a small, positively charged nucleus

    C) a hard sphere and has a large, negatively charged nucleus

    D) a hard sphere and has a large, positively charged nucleus

    B) mostly empty space and has a small, positively charged nucleus

    Compared to an electron in the first electron shell of an atom, an electron in the third shell of the same atom has

    A) less mass B) less energy C) more mass D) more energy D) more energy

    According to the wave-mechanical model of the atom, electrons are located in

    A) orbitals B) circular paths

    C) a small, dense nucleus

    D) a hard, indivisible sphere

    A) orbitals

    According to the wave-mechanical model, an orbital is defined as the

    A) circular path for electrons

    B) circular path for neutrons

    C) most probable location of electrons

    D) most probable location of neutron

    C) most probable location of electrons

    Which quantity represents the number of protons in an atom?

    A) atomic number B) oxidation number

    C) number of neutrons

    D) number of valence electrons

    A) atomic number

    Atoms are neutral because the number of

    A) protons equals the number of neutrons

    B) protons equals the number of electrons

    C) neutrons is greater than the number of protons

    D) neutrons is greater than the number of electrons

    B) protons equals the number of electrons

    Which statement describes the charge and location of an electron in an atom?

    A) An electron has a positive charge and is located outside the nucleus.

    B) An electron has a positive charge and is located in the nucleus.

    C) An electron has a negative charge and is located outside the nucleus.

    D) An electron has a negative charge and is located in the nucleus.

    C) An electron has a negative charge and is located outside the nucleus.

    Which statement describes the charge of an electron and the charge of a proton?

    A) An electron and a proton both have a charge of +1.

    B) An electron and a proton both have a charge of -1.

    C) An electron has a charge of +1, and a proton has a charge of -1.

    D) An electron has a charge of -1, and a proton has a charge of +1.

    D) An electron has a charge of -1, and a proton has a charge of +1.

    The concept that matter is composed of tiny, discrete particles is generally attributed to the

    A) Greeks B) Romans C) English D) Germans A) Greeks

    Which particle has no charge?

    A) Electron B) Positron C) Neutron D) Proton C) Neutron

    In the wave-mechanical model of the atom, an orbital is the most probable location of

    A) a proton B) a positron C) a neutron D) an electron D) an electron

    The first subatomic particle discovered was the:

    A) proton B) neutron C) electron D) photon C) electron

    Source : quizlet.com

    Which statement describes the earliest model of the atom *?

    A). An atom is an indivisible hard-sphere. Explanation: The ‘Atomic Theory‘ of Dalton is characterized as the earliest model(came in 1803) which

    Table of Contents

    What describes a concept included in the wave mechanical model of the atom?

    Which subatomic particles are paired?

    Is Proton the lightest particle?

    Which is most lightest particle?

    What is the lightest particle in the universe?

    Is a neutrino smaller than a photon?

    What is lighter than a neutrino?

    Is anything lighter than light?

    Are neutrinos lighter than electrons?

    What 2 subatomic particles have the same mass?

    What is the lightest and heaviest subatomic particle?

    A). An atom is an indivisible hard-sphere. Explanation: The ‘Atomic Theory‘ of Dalton is characterized as the earliest model(came in 1803) which described the atoms as the indivisible and resistant spheres.

    What describes a concept included in the wave mechanical model of the atom?

    Emit energy. Which statement describes a concept included in the wavemechanical model of the atom? Electrons are located in orbitals outside the nucleus. Which conclusion was dawn from the results of the gold foil experiment? An atom is mostly empty space.

    Which subatomic particles are paired?

    Pair production is the creation of a subatomic particle and its antiparticle from a neutral boson. Examples include creating an electron and a positron, a muon and an antimuon, or a proton and an antiproton. Pair production often refers specifically to a photon creating an electron–positron pair near a nucleus.

    Is Proton the lightest particle?

    Electrons – The lightest subatomic particle is the electron at 9.

    Which is most lightest particle?

    Neutrinos are everywhere. Every second, 100 trillion of them pass through your body unnoticed, hardly ever interacting. Though exceedingly abundant, they are the lightest particles of matter, and physicists around the world are attempting the difficult challenge of measuring their mass.

    What is the lightest particle in the universe?

    Neutrinos

    Is a neutrino smaller than a photon?

    Neutrinos are ghostly particles that only very rarely interact with normal matter. Countless neutrinos rush through everyone on Earth every day with no effect. “It might well be that the neutrino is lighter than the photon,” Heeck said. In principle, each photon might decay into two of the lightest neutrinos.

    What is lighter than a neutrino?

    1. The upper bound on the mass of electron neutrino is around 2 eV. The upper bound on the mass of the photon is about 10−17 eV. To the best of our current ability, photons appear to be lighter than some neutrinos.

    Is anything lighter than light?

    Originally Answered: Can something be lighter than light? If the “lighter” in your context means mass, then the answer would be a straight “No”, since if light isn’t massless, it wouldn’t be able to travel at exactly the speed of light, and won’t function as the messenger particle of electromagnetic forces.

    Are neutrinos lighter than electrons?

    Neutrinos are the least massive of the known elementary particles, with the exception of those thought to be completely massless, such as the photon. … Their results show that the lightest of the three neutrinos has a mass of at most 0.

    What 2 subatomic particles have the same mass?

    Protons and neutrons have approximately the same mass, about 1.

    What is the lightest and heaviest subatomic particle?

    Electrons are negatively charged and are the heaviest subatomic particle. Protons are positively charged and the lightest subatomic particle. Neutrons have no charge and are the lightest subatomic particle. The mass of the neutron nearly equals the mass of a proton.

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    The Development of Atomic Structure

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    Chemistry

    10th

    10th The Development of Atomic Structure

    Lai Ling 24 plays

    20 Qs

    Show Answers See Preview 1. Multiple-choice 30 seconds Q.

    Which statement describes the earliest model of the atom?

    answer choices

    An atom is an indivisible hard sphere

    An atom has a small, dense nucleus

    Electrons are negative particles in an atom

    Electrons in an atom have wave-like properties.

    2. Multiple-choice 30 seconds

    Q.

    Who thought that atoms were tiny, solid spheres with no smaller particles within them. and also predicted that atoms could not be destroyed?

    answer choices Democritus Aristotle Plato Thomson

    3. Fill-in-the-Blank

    30 seconds Q.

    The main ideas of Dalton's theory were:

    1. All matter is composed of ------------ atoms.

    2. All the atoms of a given element are ---------.

    4. Multiple-choice 30 seconds Q.

    In 1808, John Dalton proposed his atomic theory. Recall which of the following statements is one of the main ideas of Dalton's atomic theory.

    answer choices

    Atoms are solid spheres

    All matter is composed of indivisible atoms

    Atoms are made up of smaller charged particles

    5. Multiple-choice 30 seconds Q.

    Who carried out a cathode ray experimentand discovered Electrons in 1897?

    answer choices J. J. Thomson Ernest Rutherford John Dalton Chadwick 6. Multiple-choice 30 seconds Q.

    Who proposed a model of the atom that is now called the plum pudding model?

    answer choices J J Thomson Ernest Rutherford James Chadwick John Dalton 7. Multiple-choice 30 seconds Q.

    Who discovered Protons when he carried out a gold foil experiment in 1911?

    answer choices Ernest Rutherford James Chadwick Neil Bohr Erwin Schrudinger 8. Multiple-choice 30 seconds Q.

    Name the person who discovered the nucleus.

    answer choices Ernest Rutherford James Chadwick John Dalton Issac Newton 9. Multiple-choice 30 seconds Q.

    Rutherford carried out an experiment where he fired a stream of alpha particles at a very thin sheet of gold foil. He found that most of the alpha particles passed straight through the foil, while some were deflected at a small angle and some were deflected directly back.Specify what this experiment told Rutherford about the structure of the atom.

    answer choices

    Atoms are indivisible solid spheres

    All atter is made up of atoms

    Electrons are scattered through a positive shpere

    Atoms have a small, dense and posititvely charged nucleus at the centre.

    10. Multiple-choice 30 seconds Q.

    Name the person who discovered neutrons.

    answer choices Ernest Rutherford Antoine Lavoisier John Dalton James Chadwick 11. Multiple-choice 20 seconds Q.

    Neutrons are found in the...

    answer choices Nucleus Electron Cloud Electrons Protons 12. Multiple-choice 20 seconds Q.

    Electrons have a ___________ charge.

    answer choices Positive Negative Neutral 13. Multiple-choice 20 seconds Q.

    Who believed that electrons were scattered amongst positively charged material.

    answer choices JJ Thomson Ernest Rutherford John Dalton Niels Bohr 14. Multiple-choice 20 seconds Q.

    Believed that electrons traveled around the nucleus in definite paths.

    answer choices Niels Bohr John Dalton

    Modern Atomic Theory

    Ernest Rutherford 15. Multiple-choice 20 seconds Q.

    Believed that all atoms of the same element would be the same.

    answer choices John Dalton JJ Thomson Niels Bohr

    Modern Atomic Theory

    16. Multiple-choice 20 seconds Q.

    Determined that electron paths cannot be predicted and exist inside the Electron Cloud.

    answer choices

    Schrodinger & Heisenberg

    Ernest Rutherford John Dalton Democritus 17. Multiple-choice 20 seconds Q.

    Which is an electron?

    answer choices A B C 18. Multiple-choice 20 seconds Q.

    The 'atoma' in Greek means

    answer choices the smallest the greatest indivisible incredible 19. Multiple-choice 30 seconds Q.

    What did James Chadwick discovered ?

    answer choices

    Neutrons contribute almost half of the mass of an atom

    Neutrons are found in the nucleus of an atom

    Protons are found in the nucleus of an atom

    Nucleus is the centre of the atom

    20. Multiple-choice 30 seconds Q.

    Which of the following is correct?

    Source : quizizz.com

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