B: hard, indivisible sphere. Chemistry. An electron in the third shell has more energy than an electron in the second shell. 1 Which statement describes a concept included in the wave-mechanical model of the atom? Correct answers: 3 question: Which statement describes one feature of Rutherford's model of the atom? Given a list of atomic model descriptions: A: electron shells outside a central nucleus. The simplest example of the Bohr Model is for the hydrogen atom (Z = 1) or for a hydrogen-like ion (Z > 1), in which a negatively charged electron orbits a small positively charged nucleus. (1) Positrons are located in shells outside the nucleus. 2 In all atoms of bismuth, the number of electrons must equal the (1) number of protons (2) number of . Question: The discovery of atomic structure in the early 1900's was discussed in Chapter 2 of your textbook. . 1 Which statement describes the earliest model of the atom? C: The center of an atom is a small, dense nucleus. The electrons are located within the positive material of the nucleus. A) 6 B) 2 C) 3 D)4 28.How many electrons are in the outermost principal energy level (shell) of an atom of carbon in the ground state? O Most of the atom is "empty space" with an electron moving in a region outside of the nucleus. The atom's positive charge is located in the atom's nucleus. . d) Most of the atom is empty space. The atom is mostly empty space. The model showed a center, the nucleus, and rings of orbiting electrons. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Electrons revolve around the nucleus in a fixed circular path termed "orbits" or "shells" or "energy level.". Science. 0. B) An atom with 9 protons in the nucleus, with 8 electrons on the first shell and 11 electrons on the 11 answers. Figure 6.17 The energy spectrum of the hydrogen atom. QUESTION. (4) Electrons in an atom have wave-like properties. An atom is an indivisible hard sphere. The first model of the atom was developed by JJ Thomson in 1904, who thought that atoms were composed purely of negatively charged electrons. Which statement best describes this model? 1. A. M. May 21, 2014. Quantum model explains the wave-particle duality of an electron. The key (and not incorrect points) of this model are: The atom is made of protons, neutrons and electrons. The atom is now considered to be the basic unit of simple substances or elements. Every circular orbit will have a certain amount of fixed energy and these circular orbits were termed orbital shells. Which statement describes the earliest model of the atom? Which statement best best describes the density of an atoms nucleus. Shape of Orbitals. 22.State one conclusion about the internal structure of the atom that resulted from the gold foil experiment. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. CONTENTS. (2) An atom has a small, dense nucleus. HChem1 DRAFT. This model was known as the 'plum pudding' model. B. Three statements that describe Rutherford's model of the atom: (1) The atom is mostly empty space. [ ] Log in for more information. (1) An atom is an indivisible hard sphere. Which of the following statements correctly describes the fluorine atom using the Rutherford-Bohr model? Postulate 2: An atom as a whole is electrically neutral because the negative and positive charges are equal in magnitude (3) Atoms are hard, indivisible spheres. move, was established byMillikan's oil-drop experiment.Thomson's cathode-ray-tube experiment.Dalton's atomic theory.Rutherford's metal foil experimentBohr's hydrogen model One atomic model proposed during this period was the nuclear model. Atoms are tiny, indivisible particles. Which statements describe Rutherford's model of the atom? In this model, the atom was imagined to be a sphere of positive charge with negatively charged electrons dotted around inside it - like plums in a pudding. E that is needed to remove the electron from the first Bohr orbit is called the ionization limit of the hydrogen atom. These models are listed in the table below in order of development from top to bottom. This evidence led Rutherford to suggest a new model for the atom, called the nuclear model. Select three options. Atomic theory traces its origins to an ancient philosophical tradition known as atomism. The electron has properties of both particles and waves. Another way of thinking about this model was that the atom was seen to be like a mini solar system where the electrons orbit the nucleus like planets orbiting around the sun. mbiddle_63627. Overview and Key Difference 2. Question 13. An atom is an indivisible hard sphere. Electron clouds are regions where electrons are likely to be found. 1 Answer. A. A, B, C. A, C, B. One atomic model proposed during this period was the plum pudding model. A) An atom is an indivisible hard sphere. 2 See answers Advertisement The Bohr model explains the particle behavior of an electron. (3) Electron clouds are regions where electrons are likely to be found. Which statement best describes this model? The atom is mostly empty space. In the nuclear model: In the nuclear model: the mass of an atom is concentrated at its centre, the nucleus D: Atoms are hard, indivisible spheres. Which of the following statements correctly describes the fluorine atom using the Rutherford-Bohr model? Only certain electron orbits are permitted. These models are listed in the table below in order of development from top to bottom. 23.State the model that first . We will begin in ancient Greece and continue until we examine the most recent model of the atom. What model of a atom describes the location of electrons as . Y, X, Z, W. . Atomic Model 1. It is like an aquarium with swimming fish representing positive charges. The current theoretical model of the atom involves a dense nucleus surrounded by a probabilistic "cloud" of electrons. The ionization limit in Equation 6.47 that we obtain in Bohr's model agrees with experimental value. Thomson's model of an atom is similar to a plum pudding. electrons, are located in regions called orbitals. Louis de Broglie proposed that all particles could be treated as matter waves with a wavelength , given by the following equation: Erwin Schrdinger proposed the quantum mechanical model of the atom, which treats electrons as matter waves. Postulates of Bohr Atomic Model. Electron clouds are regions where electrons are likely to be found. 2 In all atoms of bismuth, the number of electrons must equal the (1) number of protons (2) number of . 60 seconds. b) Discovered the nucleus. Rutherford overturned Thomson's model in 1911 with his famous gold-foil experiment, in which he demonstrated that the atom has a tiny, massive nucleus. In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one? D ) X and A. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons . heart outlined. 4 Which statement describes a concept included in the wave-mechanical model of the atom? An atom has a small, dense nucleus. 27.Given the table below that shows student's examples of proposed models of the atom: Which model correctly describes the locations of protons and electrons in the wave-mechanical model of the atom? Q. Which order of statements represents the historical development of the atomic model? Four statements about the development of the atomic model are shown below. Which statement describes the earliest model of the atom? Four models of the atom are shown below, but one important model is missing. A) An atom is an indivisible hard sphere. Select all that apply. This theory was then disproved by Ernest Rutherford and the gold foil experiment in 1911, where Rutherford shot alpha particles at gold foil . Each atom is a sphere filled with positively charged 'fluid'. 21.State one way in which the Bohr model agrees with the Thomson model. In which group on the Periodic Table could this element be located? answer choices. An atom can be defined as the smallest, indivisible, basic unit of matter that forms all chemical elements.. The word "atom" comes from the ancient Greek word atomos, which means indivisible. (1) Protons, neutrons, and electrons are located in the nucleus. An early model of the structure of the atom was called the plum pudding model . (4) Electrons in an atom have wave-like properties. Bohr model can be applied for hydrogen atom but not for large atoms. An atom is an indivisible hard sphere. 10th - 12th grade. 2. the orientation describes the probability of finding an electron at different angles about the nucleus. Though our graphic starts in the 1800s, the idea of atoms was around long . (3) Atoms are hard, indivisible spheres. You will be able to place each event in historical order and read about the Five years earlier Rutherford had noticed that alpha particles beamed through a hole onto a photographic plate would make a sharp-edged picture, while alpha particles beamed through a sheet of mica only 20 micrometres (or about 0.002 cm . C) Electrons are negative particles in an atom. However, the theory was one of many explanations for matter and wasn't based on empirical data. (2) The atom's positive charge is located in the atom's nucleus. C. It is like a fried egg with the yolk representing the nucleus. Atoms are extremely small, typically around 100 picometers across. In the Quantum Mechanical Model, the electron is treated mathematically as a wave. (2) An atom has a small, dense nucleus. O All three of the other options are correct. . The model of the atom has changed as scientists have gathered new evidence. A student compares some models of the atom. (3) Electrons are negative particles in an atom. All three of the other options are correct Most of the atom is "empty space with an electron moving in a region outside of the nucleus. Learn about the contributions made to early atomic theory by . Despite this, our ideas about what an atom is are surprisingly recent: as little as one hundred years ago, scientists were still debating what exactly an atom looked like. 95% average accuracy. Which statements describe Rutherford's model of the atom? 4. in the quantum model of the atom, electrons do not accelerate in their orbits around the nucleus as they do in the Bohr model. The atom is mostly empty space. A) 2-8-2 B . This graphic takes a look at the key models proposed for the atom, and how they changed over time. It is like an avocado with the pit representing the nucleus. The current knowledge of atoms and atomic theory has been informed by many scientists going back to Aristotle and Democritus. The orbits are termed as "stationary orbit.". Which statement describes one feature of Rutherford's model of the atom? In this model, the nucleus is a dense region of the. The Bohr Model of the Atom In the early 20th century the common model of the atom was the Bohr or "planetary" model. Ojimorena / Getty Images. He was a schoolteacher who performed many experiments on atoms. C: The center of an atom is a small, dense nucleus. His atomic theory had five statements: 1. 21.State one way in which the Bohr model agrees with the Thomson model. (1) 1 (3) 13 (2) 2 (4) 17: 2: group 2 are 2+ 4 Which statement describes the relative energy of the electrons in the shells of a calcium atom? 15) Which one of the following statements describes theearliest model of the atom? Each scientist may be used more than once. This model is sometimes known as the planetary model of the atom. The atom cannot be divided into smaller particles. A: Electrons have wavelike properties. atom: An atom is a particle of matter that uniquely defines achemical element. THOMSON'S ATOMIC MODEL Using what he had discovered, Thomson predicted what an atom should look like. What is Democritus Atomic Theory 3. Thanks 10. Which statement describes a concept included in the wave-mechanical model of the atom? They were located next to rivers. least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state? 2. John Dalton (1766-1844), an English Chemist, put forward a theory to describe the nature of the atom. Which statement correctly describes an atom of the element helium? B) An atom with 9 protons in the nucleus, with 8 electrons on the first shell and 11 electrons A) Electrons in an atom have wave-like properties. 3 An atom of an element forms a 2+ ion. Atomic Model Worksheet 1. See Page 1. Each electron is negatively charged. (1) An atom is an indivisible hard sphere. Postulates of Thomson's atomic model. Save. 1 Which statement describes the earliest model of the atom? (4) Electrons in an atom have wave-like properties. The electrons will not . B, C, A. Which statement describes the earliest model of the atom? An atom consists of a central nucleus that is usually surrounded by one or more electrons. Identify who was the first person to propose the idea or make the discovery. Y, X, Z, W. . Chemistry. A simplified picture of this is shown alongside. quarterfreelp and 13 more users found this answer helpful. Get the answers you need, now! This resembles the sticky jam part of a pudding. The discovery of atomic structure in the early 1900's was discussed in Chapter 2 of your textbook. Figure 4.4: Rutherford's model of the atom. (2) An atom has a small, dense nucleus. What does half life depend on and what does it not depend on? Chemistry questions and answers. B: Atoms have small, negatively charged particles. c) Most of the mass of the atom is in the tiny, dense, positively charged nucleus. I PUT: The atom cannot be divided into smaller particles. (2) Electrons orbit the nucleus in shells at fixed distances. A: Electrons have wavelike properties. 1 Which statement describes the earliest model of the atom? 04B5ED0D V1 - Page 3 16) The results of the . Atomic theory is the scientific theory that matter is composed of particles called atoms. (1) An electron in the first shell has more energy than an electron in the second shell. 2 An orbital is a region in an atom where there is a high probability of finding (1) Positrons are in shells outside . The electrons are located within the positive material of the nucleus. The Bohr model was a one-dimensional model that used one quantum number to describe . most probable location of neutrons. Atomic theory originated as a philosophical concept in ancient India and Greece. This model has some good ideas in it, but overall it has some problems. The mass of a proton is approximately equal to the mass of? D) Electrons in an atom have wave-like properties. Which statement best describes Rutherford's model of the atom? The current model of the atom in which essentially all of an Atom's mass is contained in a very small nucleus, whereas most of an atom's volume is due to the space in which the atom's electrons. Applications. Bohr's model of the hydrogen atom explains the emission and absorption spectra of atomic hydrogen and hydrogen-like ions with low atomic numbers. Isotopes and Atoms. (4) Electrons are located in regions called orbitals. (3) Electrons are negative particles in an atom. O It was proposed by J.J. Thomson. C: mostly empty space. 3. there are four different kinds of p orbitals. They were the first to demonstrate it. These are the key points to Thomson's Atomic Model: 1. A) An atom with 9 protons in the nucleus, with 2 electrons on the first shell and 7 on the second shell. 3 days ago. the nucleus of an atom of 10. D. It is like a huge stadium with a positively charged marble at the center. 22.State one conclusion about the internal structure of the atom that resulted from the gold foil experiment. Thus, an atom is the fundamental (basic) building blocks of matter i.e all physical and chemical substances.. Additionally, an atom defines or determines the structure of a chemical . This answer has been confirmed as correct and helpful. One atomic model proposed during this period . More than one selection may be More than one selection may be A: The Bhor model of an atom can be described as follows: Which statement best describes this model? Today, we will be learning about the evolution of the models of the atom. @ An atom with 9 protons in the nucleus, with 2 electrons on the first shell and 7 on the second shell. (1) Protons, neutrons, and electrons are located in the nucleus. Electromagnetic energy will be absorbed or emitted if an electron moves from one orbit to another. According to atomism, matter consists of discrete particles. Q: Describe Niels Bohr's model of the structure of the hydrogen atom. Which statement best best describes the location of factories in new England during the early 1800s? The word "atom" means "uncuttable" in Greek terms. An atom is the smallest unit of ordinary matter that forms a chemical element. The discovery of atomic structure in the early 1900's was discussed in Chapter 2 of your textbook. Quantum model can be used for any atom, including smaller ones and large, complex atoms. 15.Four statements about the development of the atomic model are shown below. The atom cannot be divided into smaller particles. C) Electrons are negative particles in an atom. (1) An atom is an indivisible hard sphere. B) An atom has a small, dense nucleus. Postulate 1: An atom consists of a positively charged sphere with electrons embedded in it. A. 3. Schrdinger's equation, , can be solved to yield a series of wave function , each of which is associated . Edit. Because of its design this model is known as the plum pudding model 2. 1 Which statement describes a concept included in the wave-mechanical model of the atom? In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one? B. Which list of atomic model descriptions represents the order of historical development from the earliest to most recent? The statement that describes the earliest model of the atom is: A. C ) X and Z. Atomic theory is the scientific theory that describes the nature of matter by means of discrete units called atoms. Most of the space . B) An atom has a small, dense nucleus. ishunarwar8388 ishunarwar8388 04.07.2018 Chemistry Secondary School answered Which statements describe Rutherford's model of the atom? The origin of this theory is from ancient Greece, which then entered the scientific mainstream. Today, we will read about the historical discovery of the different models of the atom. According to this idea, if one were to take a . It was the first model to introduce the concept of a quantum number to describe atomic states and to postulate quantization of electron orbits in the atom. D. An atom of helium has eight electrons in its outer energy. C. An atom of helium has a full outer energy level and is therefore unusually reactive. In the Bohr Model, the electron is treated as a particle in fixed orbits around the nucleus. 23.State the model that first . D) An atom is an indivisible hard sphere. 5. two electrons within the same orbital my have the same . 36 As the first five elements in Group 15 are considered in order of increasing atomic number, first ionization energy (1) decreases Edit. a) Atoms cannot be created, destroyed or divided into smaller particles. Electrons orbit around the center of the atom. (2) Electrons orbit the nucleus in shells at xed distances. answer choices . D: Atoms are hard indivisible spheres. 1 Answer. They are so small that accurately predicting their behavior using classical physicsas if they were tennis balls, for exampleis not possible due to quantum effects. (2) Neutrons are located in shells outside the . Which statement describes a concept included in the wave mechanical model of the atom? What statement describes the relative energy of the electrons of a calcium atom? 8 answers. An atom of helium has its valence electrons in it's first energy level. A student compares some models of the atom. 1 times. Which statement describes the earliest model of the atom? (3) Electrons are negative particles in an atom. B: Atoms have small, negatively charged particles.