Composition and simple structure of an atom (Bohr’s model of an atom), ( Form 2, Chemistry )

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Test your knowledge of Bohr's atomic model.

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Composition and simple structure of an atom (Bohr’s model of an atom), ( Form 2, Chemistry )


Froggy Jumps Composition and simple structure of an atom (Bohr’s model of an atom), ( Form 2, Chemistry )Online version Test your knowledge of Bohr's atomic model. by YAKILI LMS 1 What is Bohr's model of atoms primarily about? a Electrons orbiting a small nucleus in fixed orbits b Electrons freely moving in a cloud c Protons orbiting the nucleus 2 In Bohr's model, electrons move in fixed what? a Orbits and clouds b Whirlwinds c Orbits 3 What does the nucleus contain in Bohr's model? a Electrons only b Protons and neutrons c Only protons 4 Bohr's model explains atomic emission lines as a Electrons jumping between energy levels b Molecular bonds forming c Nuclear fission 5 The energy of an electron in Bohr's model is determined by a Its orbit's energy level b Its size alone c Only its spin 6 What happens when an electron moves to a higher energy level? a Absorbs a quantum of energy b Loses energy spontaneously c Merges with the nucleus 7 What happens when an electron falls to a lower energy level? a Changes the nucleus type b Absorbs a photon c Emits a photon 8 Which scientist proposed Bohr's model? a Niels Bohr b J.J. Thomson c Erwin Schrödinger 9 Bohr's model is most accurate for a Hydrogen-like atoms b Molecules only c All heavy elements 10 What is a quantum of energy in Bohr's model called? a Quark b Electron c Photon 11 Postulate: electrons occupy specific energy levels without a Remaining mobile in clouds b Radiating energy while in orbit c Moving between levels constantly 12 In Bohr's model, energy levels are a Random b Quantized c Continuous 13 Which part of the atom is most important in Bohr's model? a Nucleus b Electron cloud c Electrons only 14 What determines the color of the emitted photon? a Nuclear spin b Difference between energy levels c Molecular vibration 15 Limitations of Bohr's model include a It disproves atoms exist b It struggles with multi-electron atoms c It cannot explain hydrogen spectra 16 Bohr's model successfully explains the spectrum of a Oxygen gas b Hydrogen atom c Sodium chloride 17 What does a diagram of Bohr's atom show? a Electrons in circular orbits around nucleus b Electron clouds and probabilities c Nuclear decay paths 18 Postulate: electrons transition only between a Allowed energy levels b Any energy values c Random positions 19 Which quantity remains constant for an electron in a fixed orbit? a Mass b Charge c Angular momentum 20 Bohr energy levels increase as a Distance from nucleus increases b Nucleus changes c Distance decreases 21 The energy difference between levels corresponds to a Neutron energy b Photon energy c Proton energy 22 Which statement is a Bohr postulate? a Electrons have stable orbits with quantized energies b Nuclei orbit electrons c Electrons move randomly 23 Bohr's model helps explain the line spectrum of a Helium b Neon c Hydrogen 24 Energy is released when an electron a Remains same b Jumps to a lower energy level c Jumps to a higher level 25 Can Bohr's model describe molecular bonding well? a Only for metals b No, it focuses on atoms in isolation c Yes, for all molecules 26 Why does Bohr's model have limitations? a It cannot describe nuclei b It ignores photons c It uses fixed orbits not applicable to complex atoms 27 Which energy transition emits a visible photon in hydrogen? a Lyman series b Paschen series c Balmer series 28 Bohr energy levels are primarily a concept of a Classical physics b Relativity only c Quantum theory 29 What model improved upon Bohr by using orbitals? a Plum pudding model b Dalton's model c Quantum mechanical model 30 Which particle's behavior defines the energy levels? a Neutron b Electron c Proton 31 Bohr's model treats electron energy as a Random values b Continuous values c Discrete values 32 The nucleus is located at the a Periphery b Center of the atom c Outside the atom 33 What causes spectral lines in Bohr's model? a Electron transitions between levels b Nuclear decay c Molecular vibrations 34 Bohr's model is especially used to teach a Solid-state conductivity b Chemical bonding in plastics c Energy levels in atoms 35 Which spectrum is historically linked to Bohr? a Hydrogen emission spectrum b Mercury spectrum c Neon glow 36 Postulate: electrons in stable orbits do not a Lose charge b Radiate energy c Gain mass 37 What is the primary evidence for Bohr's model? a Brownian motion b Diffuse spectra of metals c Discrete spectral lines of hydrogen 38 Which quantity is quantized in Bohr's model? a Mass b Angular momentum c Charge 39 Bohr's model uses the idea of a Continuous energy bands b No energy levels c Quantized energy levels 40 The distance of an electron's orbit is called its a Volume b Perimeter c Radius 41 What does the Bohr model not fully explain? a Atomic mass b Hydrogen spectra c Spectra of multi-electron atoms 42 Which of these is a postulate of Bohr's model? a Electrons orbit without energy changes b Nucleus dictates orbit shape c Electrons occupy fixed energy levels 43 Bohr's model was mainly designed for a Molecules b Simple atoms like hydrogen c Ions 44 What happens if an electron absorbs energy? a Disappears b Moves to a lower level c Moves to a higher level 45 Which instrument studies atomic spectra? a Telescope b Spectroscope c Microscope 46 Energy level spacing in Bohr's atom is a Random b Same for all levels c Different for each level 47 Bohr's model helped establish a Quantization concept in atoms b Wave-particle duality c Nuclear fusion 48 The nucleus contains protons and neutrons called a Electrons b Quarks c Nucleons 49 Which property remains constant during a transition? a Spin direction b Location of nucleus c Energy difference 50 Which series corresponds to higher energy ultraviolet lines? a Lyman series b Balmer series c Paschen series

Composition and simple structure of an atom (Bohr’s model of an atom), ( Form 2, Chemistry )

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Composition and simple structure of an atom (Bohr’s model of an atom), ( Form 2, Chemistry )Online version

by YAKILI LMS

What is Bohr's model of atoms primarily about?

In Bohr's model, electrons move in fixed what?

What does the nucleus contain in Bohr's model?

Bohr's model explains atomic emission lines as

The energy of an electron in Bohr's model is determined by

What happens when an electron moves to a higher energy level?

What happens when an electron falls to a lower energy level?

Which scientist proposed Bohr's model?

Bohr's model is most accurate for

What is a quantum of energy in Bohr's model called?

Postulate: electrons occupy specific energy levels without

In Bohr's model, energy levels are

Which part of the atom is most important in Bohr's model?

What determines the color of the emitted photon?

Limitations of Bohr's model include

Bohr's model successfully explains the spectrum of

What does a diagram of Bohr's atom show?

Postulate: electrons transition only between

Which quantity remains constant for an electron in a fixed orbit?

Bohr energy levels increase as

The energy difference between levels corresponds to

Which statement is a Bohr postulate?

Bohr's model helps explain the line spectrum of

Energy is released when an electron

Can Bohr's model describe molecular bonding well?

Why does Bohr's model have limitations?

Which energy transition emits a visible photon in hydrogen?

Bohr energy levels are primarily a concept of

What model improved upon Bohr by using orbitals?

Which particle's behavior defines the energy levels?

Bohr's model treats electron energy as

The nucleus is located at the

What causes spectral lines in Bohr's model?

Bohr's model is especially used to teach

Which spectrum is historically linked to Bohr?

Postulate: electrons in stable orbits do not

What is the primary evidence for Bohr's model?

Which quantity is quantized in Bohr's model?

Bohr's model uses the idea of

The distance of an electron's orbit is called its

What does the Bohr model not fully explain?

Which of these is a postulate of Bohr's model?

Bohr's model was mainly designed for

What happens if an electron absorbs energy?

Which instrument studies atomic spectra?

Energy level spacing in Bohr's atom is

Bohr's model helped establish

The nucleus contains protons and neutrons called

Which property remains constant during a transition?

Which series corresponds to higher energy ultraviolet lines?